US3044432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating and apparatus for watercraft
Assignee: Grumman Corp
•
Filing: 1959-12-02
•
Granted: 1962-07-17
•
Expires: 1979-12-02
Abstract
No abstract record available.
Inventors
- 👤 Glenford J Wennagel
- 👤 Robert R Gilruth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:18
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; B63B1/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24099E
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USRE19651E
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US1964418A
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CH149606A
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US2257406A
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US2350809A
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US2538224A
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US2562227A
Cited
US2670910A
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US2703063A
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US2771051A
Cited
US2804038A
Cited
US2890672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |