US2810302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible incremental mechanism
Assignee: Northrop Grumman Corp
•
Filing: 1954-11-30
•
Granted: 1957-10-22
•
Expires: 1974-11-30
Abstract
No abstract record available.
Inventors
- 👤 Richard D James
- 👤 Frank L Prendergast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:43
CPC Classifications
F; F16; F16H; F16H31/00; F16H31/003; F16H31/004; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/19; Y10T74/1987; Y10T74/19879; Y10T74/20; Y10T74/20576; Y10T74/20924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US815578A
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US1577757A
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US1891101A
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US2023235A
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US2360488A
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US2512894A
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US2625833A
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US2753703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |