FR537819A - Improvements in mechanical pencils - Google Patents

Improvements in mechanical pencils

Info

Publication number: FR537819A
Authority: FR; France
Prior art keywords: mechanical pencils; pencils; mechanical
Prior art date: 1921-02-02
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

Abraham Pollak

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.)

1921-02-02

Filing date

1921-04-29

Publication date

1922-05-30

1921-04-29 Application filed filed Critical

1922-05-30 Application granted granted Critical

1922-05-30 Publication of FR537819A publication Critical patent/FR537819A/en

Status Expired legal-status Critical Current

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
- B43K21/085—Writing-core feeding mechanisms with the writing-cores fed by screws with a threaded propelling shank

FR537819D 1921-02-02 1921-04-29 Improvements in mechanical pencils Expired FR537819A (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US441739A US1391273A (en)	1921-02-02	1921-02-02	Lead-pencil
GB12150/21A GB175923A (en)	1921-02-02	1921-04-27	Improvements in propelling pencils
FR537819T		1921-04-29

Publications (1)

Publication Number	Publication Date
FR537819A true FR537819A (en)	1922-05-30

Family

ID=23754089

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR537819D Expired FR537819A (en)	1921-02-02	1921-04-29	Improvements in mechanical pencils

Country Status (3)

Country	Link
US (1)	US1391273A (en)
FR (1)	FR537819A (en)
GB (1)	GB175923A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2467608A (en) *	1947-02-24	1949-04-19	Paul Sussman	Illuminating writing instrument

1921
- 1921-02-02 US US441739A patent/US1391273A/en not_active Expired - Lifetime
- 1921-04-27 GB GB12150/21A patent/GB175923A/en not_active Expired
- 1921-04-29 FR FR537819D patent/FR537819A/en not_active Expired

Also Published As

Publication number	Publication date
GB175923A (en)	1922-03-02
US1391273A (en)	1921-09-20

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