US3220645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of counters to adding machines
Assignee: Individual
•
Filing: 1963-05-06
•
Granted: 1965-11-30
•
Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Edward C Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:27
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/28; G06M1/283; G06M1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A CALCULATING DEVICE COMPRISING A COUNTER HAVING COUNTER WHEELS HAVING TRANSFER MEANS BETWEEN THE WHEELS WHEREBY A PREDETERMINED REVOLUTION OF A WHEEL IMPARTS A STEP MOVEMENT TO AN ADJACENT WHEEL, MEANS FOR MANUALLY FEEDING NUMERICAL INPUTS SELECTIVELY TO INDIVIDUAL COUNTER WHEELS COMPRISING A MEMBER SELECTIVELY ENGAGEABLE WITH THE PERIPHERY OF ANY ONE OF THE COUNTER WHEELS, AND MEANS FOR ROTATING SAID MEMBER ABOUT THE AXIS OF SAID COUNTERWHEEL TO IMPART A PREDETERMINED ANGULAR ROTATION TO THE SELECTED COUNTER WHEEL.
Claim 2
Dependent Claim
79 words
A CALCULATING DEVICE COMPRISING A COUNTER HAVING COUNTER WHEELS HAVING TRANSFER MEANS BETWEEN THE WHEELS WHEREBY A PREDETERMINED REVOLUTION OF A WHEEL IMPARTS A STEP MOVEMENT TO AN ADJACENT WHEEL, MEANS FOR MANUALLY FEEDING NUMERICAL INPUTS SELECTIVELY TO INDIVIDUAL COUNTER WHEELS COMPRISING A MEMBER SELECTIVELY ENGAGEABLE WITH THE PERIPHERY OF ANY ONE OF THE COUNTER WHEELS, AND MEANS FOR ROTATING SAID MEMBER ABOUT THE AXIS OF SAID COUNTERWHEEL TO IMPART A PREDETERMINED ANGULAR ROTATION TO THE SELECTED COUNTER WHEEL.
References Cited (Backward Citations)
US3100602A
Cited
NL72866C
Cited
US650465A
Cited
US865200A
Cited
US1009886A
Cited
US999011A
Cited
US1110327A
Cited
US1120138A
Cited
US1749365A
Cited
US1775066A
Cited
US2082256A
Cited
US2148768A
Cited
GB624110A
Cited
US3035451A
Cited
US3070297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |