ZA71554B - Improvements in conversion aids - Google Patents
Improvements in conversion aidsInfo
- Publication number
- ZA71554B ZA71554B ZA710554A ZA71554A ZA71554B ZA 71554 B ZA71554 B ZA 71554B ZA 710554 A ZA710554 A ZA 710554A ZA 71554 A ZA71554 A ZA 71554A ZA 71554 B ZA71554 B ZA 71554B
- Authority
- ZA
- South Africa
- Prior art keywords
- conversion aids
- aids
- conversion
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/0005—Hand manipulated computing devices characterised by a specific application
- G06G1/0073—Hand manipulated computing devices characterised by a specific application for commerce, bank or invoicing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/0005—Hand manipulated computing devices characterised by a specific application
- G06G1/0068—Hand manipulated computing devices characterised by a specific application for conversion from one unit system to another, e.g. from British to metric
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Credit Cards Or The Like (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Calculators And Similar Devices (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA710554A ZA71554B (en) | 1971-01-28 | 1971-01-28 | Improvements in conversion aids |
AU38386/72A AU468511B2 (en) | 1971-01-28 | 1972-01-27 | Improvements in conversion aids |
GB402772A GB1345639A (en) | 1971-01-28 | 1972-01-28 | Conversion aids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA710554A ZA71554B (en) | 1971-01-28 | 1971-01-28 | Improvements in conversion aids |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA71554B true ZA71554B (en) | 1972-03-29 |
Family
ID=25562983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA710554A ZA71554B (en) | 1971-01-28 | 1971-01-28 | Improvements in conversion aids |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU468511B2 (en) |
GB (1) | GB1345639A (en) |
ZA (1) | ZA71554B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2654848B1 (en) * | 1989-11-22 | 1994-08-26 | Michel Dalmau | DEVICE FOR EQUIVALENCE BETWEEN CURRENCIES. |
FR2774491B1 (en) * | 1998-02-04 | 2001-09-14 | Jean Francois Jacques Auboin | ANALOGUE SYSTEM ALLOWING SIMPLE CURRENCY CONVERSION ON WATCHES |
-
1971
- 1971-01-28 ZA ZA710554A patent/ZA71554B/en unknown
-
1972
- 1972-01-27 AU AU38386/72A patent/AU468511B2/en not_active Expired
- 1972-01-28 GB GB402772A patent/GB1345639A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1345639A (en) | 1974-01-30 |
AU3838672A (en) | 1973-08-02 |
AU468511B2 (en) | 1976-01-15 |
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