Patent US3220645A successfully refreshed from Google Patents.
US3220645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of counters to adding machines
Assignee: Individual
•
Filing: 1963-05-06
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Granted: 1965-11-30
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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 18:57
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.
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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 |