Patent US3385374A successfully refreshed from Google Patents.
US3385374A
Expired / Lapsed
US
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Marine propeller
Assignee: OCEANICS Inc
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Filing: 1967-01-23
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Granted: 1968-05-28
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Expires: 1987-01-23
Abstract
No abstract record available.
Inventors
- 👤 Kaplan Paul
- 👤 August F Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:37
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/28; B63H1/18; B63H1/20; B63H1/26; B63H2001/286; B63H23/00; B63H23/32; B63H23/34; B63H2023/346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA505082A
Cited
US736952A
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US1119178A
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US1190755A
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US2169325A
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GB774396A
Cited
US3109495A
Cited
US3209714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |