US2833154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque amplifier unit
Assignee: Individual
•
Filing: 1952-09-27
•
Granted: 1958-05-06
•
Expires: 1972-09-27
Abstract
No abstract record available.
Inventors
- 👤 William B Barnes
- 👤 William A Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:00
CPC Classifications
G; G05; G05G; G05G19/00; B; B62; B62D; B62D5/00; B62D5/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324890A
Cited
US1168533A
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US1355152A
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FR597310A
Cited
US1763470A
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US2311010A
Cited
GB572934A
Cited
US2553795A
Cited
US2587377A
Cited
US2534536A
Cited
US2744415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |