US3479822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine synchronizer
Assignee: United States Department of the Navy
•
Filing: 1968-03-27
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Granted: 1969-11-25
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Expires: 1988-03-27
Abstract
No abstract record available.
Inventors
- 👤 Robert E Nelson
- 👤 Charles D Boltz Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:48
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/42; B; B64; B64C; B64C11/00; B64C11/46; B64C11/50; B64D; B64D31/00; B64D31/02; B64D31/06; B64D31/12; H; H02; H02P; H02P5/00; H02P5/46; H02P5/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2557679A
Cited
US2847617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |