FR553975A - Perfectionnements aux appareils à tailler les lentilles - Google Patents

Perfectionnements aux appareils à tailler les lentilles

Info

Publication number
FR553975A
FR553975A FR553975DA FR553975A FR 553975 A FR553975 A FR 553975A FR 553975D A FR553975D A FR 553975DA FR 553975 A FR553975 A FR 553975A
Authority
FR
France
Prior art keywords
sharpening devices
lens
lens sharpening
devices improvements
sharpening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Optical Corp
Original Assignee
American Optical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Optical Corp filed Critical American Optical Corp
Application granted granted Critical
Publication of FR553975A publication Critical patent/FR553975A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/143—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling lens-drilling machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
FR553975D 1922-07-15 1922-07-15 Perfectionnements aux appareils à tailler les lentilles Expired FR553975A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR553975T 1922-07-15

Publications (1)

Publication Number Publication Date
FR553975A true FR553975A (fr) 1923-06-02

Family

ID=8938576

Family Applications (1)

Application Number Title Priority Date Filing Date
FR553975D Expired FR553975A (fr) 1922-07-15 1922-07-15 Perfectionnements aux appareils à tailler les lentilles

Country Status (1)

Country Link
FR (1) FR553975A (fr)

Similar Documents

Publication Publication Date Title
FR553975A (fr) Perfectionnements aux appareils à tailler les lentilles
FR629569A (fr) Cisaille à molettes
FR557308A (fr) Appareil à encaustiquer
FR564040A (fr) Perfectionnements apportés aux appareils portatifs de projection de vues
FR545851A (fr) Porte-objets à main
FR560311A (fr) Perfectionnement aux lunettes
FR27921E (fr) Balayeuse-arroseuse à main
FR556459A (fr) Balayeuse-arroseuse à main
FR603084A (fr) Perfectionnements aux lentilles ophtalmiques
FR27536E (fr) Perfectionnements aux appareils de projection
FR558965A (fr) Perfectionnements aux appareils à vulcaniser
FR599248A (fr) Perfectionnements aux lentilles pour projecteurs
FR568475A (fr) Appareils de broyage
FR562315A (fr) Perfectionnements aux lentilles bifocales
FR29707E (fr) Appareil à encaustiquer
FR568073A (fr) Perfectionnements aux appareils automatiques à payement préalable
FR559312A (fr) Perfectionnements aux jumelles de ressorts
FR576616A (fr) Perfectionnements aux appareils à calculer
FR569985A (fr) Perfectionnements aux appareils à calculer
FR559719A (fr) Détecteur à galène pour appareils de t. s. f.
FR577524A (fr) Perfectionnements aux lentilles bifocales
FR572313A (fr) Perfectionnements aux lentilles employées dans les appareils de projection
FR555327A (fr) Détecteur à cristaux
FR559632A (fr) Détecteur à cristaux
FR567989A (fr) Perfectionnements aux appareils à membrane vibrante