US2939331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quiet gear
Assignee: General Electric Co
•
Filing: 1959-03-25
•
Granted: 1960-06-07
•
Expires: 1979-03-25
Abstract
No abstract record available.
Inventors
- 👤 Frank E Weeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:48
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907; Y10T74/19921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US52986A
Cited
US1265811A
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US1524555A
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US1648413A
Cited
DE564514C
Cited
US2380776A
Cited
DE859702C
Cited
US2548839A
Cited
US2756607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |