CA1138635A - Indicateur de niveau a bulle a visibilite amelioree - Google Patents

Indicateur de niveau a bulle a visibilite amelioree

Info

Publication number
CA1138635A
CA1138635A CA000383282A CA383282A CA1138635A CA 1138635 A CA1138635 A CA 1138635A CA 000383282 A CA000383282 A CA 000383282A CA 383282 A CA383282 A CA 383282A CA 1138635 A CA1138635 A CA 1138635A
Authority
CA
Canada
Prior art keywords
bubble
light
passage
level
cavity
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
CA000383282A
Other languages
English (en)
Inventor
Robert R. Thomas
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.)
Hopkins Manufacturing Corp
Original Assignee
Hopkins Manufacturing 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
Priority claimed from US05/922,763 external-priority patent/US4164077A/en
Application filed by Hopkins Manufacturing Corp filed Critical Hopkins Manufacturing Corp
Priority to CA000383282A priority Critical patent/CA1138635A/fr
Application granted granted Critical
Publication of CA1138635A publication Critical patent/CA1138635A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Illuminated Signs And Luminous Advertising (AREA)
CA000383282A 1978-07-07 1981-08-05 Indicateur de niveau a bulle a visibilite amelioree Expired CA1138635A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000383282A CA1138635A (fr) 1978-07-07 1981-08-05 Indicateur de niveau a bulle a visibilite amelioree

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US05/922,763 US4164077A (en) 1978-07-07 1978-07-07 Level indicating devices
CA324,803A CA1125497A (fr) 1978-07-07 1979-04-03 Indicateur de niveau a images de bulle intensifiees
CA000383282A CA1138635A (fr) 1978-07-07 1981-08-05 Indicateur de niveau a bulle a visibilite amelioree
US922,763 1992-07-31

Publications (1)

Publication Number Publication Date
CA1138635A true CA1138635A (fr) 1983-01-04

Family

ID=27166164

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000383282A Expired CA1138635A (fr) 1978-07-07 1981-08-05 Indicateur de niveau a bulle a visibilite amelioree

Country Status (1)

Country Link
CA (1) CA1138635A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6851200B2 (en) 2003-03-14 2005-02-08 Hopkins Manufacturing Corporation Reflecting lighted level

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6851200B2 (en) 2003-03-14 2005-02-08 Hopkins Manufacturing Corporation Reflecting lighted level

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Legal Events

Date Code Title Description
MKEX Expiry
MKEX Expiry

Effective date: 20000104