FR403912A - Improvements to calculating machines - Google Patents
Improvements to calculating machinesInfo
- Publication number
- FR403912A FR403912A FR403912DA FR403912A FR 403912 A FR403912 A FR 403912A FR 403912D A FR403912D A FR 403912DA FR 403912 A FR403912 A FR 403912A
- Authority
- FR
- France
- Prior art keywords
- calculating machines
- machines
- calculating
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US403912XA | 1908-09-16 | 1908-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR403912A true FR403912A (en) | 1909-11-18 |
Family
ID=1448519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR403912D Expired FR403912A (en) | 1908-09-16 | 1909-06-01 | Improvements to calculating machines |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR403912A (en) |
-
1909
- 1909-06-01 FR FR403912D patent/FR403912A/en not_active Expired
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