US2988654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric generator
Assignee: Siegler Corp
•
Filing: 1958-09-04
•
Granted: 1961-06-13
•
Expires: 1978-09-04
Abstract
No abstract record available.
Inventors
- 👤 Henry S Katzenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:29
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899572A
Cited
US2876365A
Cited
US2882423A
Cited
US2861201A
Cited
US2846594A
Cited
US2933622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |