FR544939A - Appareil de perçage - Google Patents

Appareil de perçage

Info

Publication number: FR544939A
Authority: FR; France
Prior art keywords: drilling device; drilling
Prior art date: 1921-04-23
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

Inventor

Louis-Hippolyte-Edmo Begot

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.)

1921-04-23

Filing date

1921-04-23

Publication date

1922-10-03

1921-04-23 Application filed filed Critical

1922-10-03 Application granted granted Critical

1922-10-03 Publication of FR544939A publication Critical patent/FR544939A/fr

Status Expired legal-status Critical Current

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/04—Piercing presses

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)

FR544939D 1921-04-23 1921-04-23 Appareil de perçage Expired FR544939A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR544939T		1921-04-23

Publications (1)

Publication Number	Publication Date
FR544939A true FR544939A (fr)	1922-10-03

Family

ID=8932625

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR544939D Expired FR544939A (fr)	1921-04-23	1921-04-23	Appareil de perçage

Country Status (1)

Country	Link
FR (1)	FR544939A (fr)

1921
- 1921-04-23 FR FR544939D patent/FR544939A/fr not_active Expired

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