FR534442A - Improvements to perforated cards and their new use in automatic diagrams - Google Patents

Improvements to perforated cards and their new use in automatic diagrams

Info

Publication number
FR534442A
FR534442A FR534442DA FR534442A FR 534442 A FR534442 A FR 534442A FR 534442D A FR534442D A FR 534442DA FR 534442 A FR534442 A FR 534442A
Authority
FR
France
Prior art keywords
diagrams
automatic
new use
perforated cards
perforated
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
French (fr)
Inventor
Charles-Francois Buffard
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 filed Critical
Application granted granted Critical
Publication of FR534442A publication Critical patent/FR534442A/en
Expired legal-status Critical Current

Links

FR534442D 1920-11-23 1920-11-23 Improvements to perforated cards and their new use in automatic diagrams Expired FR534442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR534442T 1920-11-23

Publications (1)

Publication Number Publication Date
FR534442A true FR534442A (en) 1922-03-25

Family

ID=8925521

Family Applications (1)

Application Number Title Priority Date Filing Date
FR534442D Expired FR534442A (en) 1920-11-23 1920-11-23 Improvements to perforated cards and their new use in automatic diagrams

Country Status (1)

Country Link
FR (1) FR534442A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567632A (en) * 1946-06-21 1951-09-11 Bihaly Lajos Apparatus for plotting graphs
US2671548A (en) * 1950-11-29 1954-03-09 Anderson Ralph Andrew Graph printing machine
US2898175A (en) * 1955-04-11 1959-08-04 Northrop Corp Digital plotter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567632A (en) * 1946-06-21 1951-09-11 Bihaly Lajos Apparatus for plotting graphs
US2671548A (en) * 1950-11-29 1954-03-09 Anderson Ralph Andrew Graph printing machine
US2898175A (en) * 1955-04-11 1959-08-04 Northrop Corp Digital plotter

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