FR406998A - Machine à additions et à soustractions - Google Patents

Machine à additions et à soustractions

Info

Publication number: FR406998A
Authority: FR; France
Prior art keywords: addition; subtraction machine; subtraction; machine
Prior art date: 1909-09-14
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)

Inventor

Wilhelm Strauss

Theodor Geertz

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.)

THEODOR GEERTZ

Original Assignee

THEODOR GEERTZ

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.)

1909-09-14

Filing date

1909-09-14

Publication date

1910-02-16

1909-09-14 Application filed by THEODOR GEERTZ filed Critical THEODOR GEERTZ

1910-02-16 Application granted granted Critical

1910-02-16 Publication of FR406998A publication Critical patent/FR406998A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
- G06C7/00—Input mechanisms
- G06C7/02—Keyboards
- G06C7/06—Keyboards with one set of keys for each denomination

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Computer Hardware Design (AREA)
Computing Systems (AREA)
General Physics & Mathematics (AREA)
Theoretical Computer Science (AREA)

FR406998D 1909-09-14 1909-09-14 Machine à additions et à soustractions Expired FR406998A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR406998T		1909-09-14

Publications (1)

Publication Number	Publication Date
FR406998A true FR406998A (fr)	1910-02-16

Family

ID=1451339

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR406998D Expired FR406998A (fr)	1909-09-14	1909-09-14	Machine à additions et à soustractions

Country Status (1)

Country	Link
FR (1)	FR406998A (fr)

1909
- 1909-09-14 FR FR406998D patent/FR406998A/fr not_active Expired

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