US3056374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary steering and propulsion unit
Assignee: Individual
•
Filing: 1959-03-26
•
Granted: 1962-10-02
•
Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Hans D Linhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:00
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/22; B63H23/26; B63H25/00; B63H25/42; Y; Y10; Y10S; Y10S415/00; Y10S415/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1805597A
Cited
US2330674A
Cited
US2298869A
Cited
US2363335A
Cited
US2656809A
Cited
US2766715A
Cited
US2850106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |