Patent US1680209A successfully refreshed from Google Patents.
US1680209A
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US
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Ship-propulsion system
Assignee: General Electric Co
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Filing: 1926-08-30
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Granted: 1928-08-07
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Expires: 1946-08-30
Abstract
No abstract record available.
Inventors
- 👤 William L R Emmet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:22
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/30; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19284; Y10T74/19377; Y10T74/19386; Y10T74/19391
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-08-07 | 1932-02-06 | 1932-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-07 | 1936-02-06 | 1936-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-07 | 1940-02-06 | 1940-08-07 | $7700.00 | Window Closed / Lapsed |