FR58228E - Calculator - Google Patents
CalculatorInfo
- Publication number
- FR58228E FR58228E FR58228DA FR58228E FR 58228 E FR58228 E FR 58228E FR 58228D A FR58228D A FR 58228DA FR 58228 E FR58228 E FR 58228E
- Authority
- FR
- France
- Prior art keywords
- calculator
- 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
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
- G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
- G06G1/08—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales
- G06G1/085—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales borne by a cylinder
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR58228T | 1948-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR58228E true FR58228E (en) | 1953-09-29 |
Family
ID=8692149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR58228D Expired FR58228E (en) | 1948-04-20 | 1948-04-20 | Calculator |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR58228E (en) |
-
1948
- 1948-04-20 FR FR58228D patent/FR58228E/en not_active Expired
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