Patent US2881730A successfully refreshed from Google Patents.
US2881730A
Expired / Lapsed
US
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Boat steering device
Assignee: Individual
•
Filing: 1955-04-29
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Granted: 1959-04-14
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Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Thane R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:38
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/05; B63H; B63H20/00; B63H20/08; B63H20/12; B63H25/00; B63H25/02; B63H2025/028; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312071A
Cited
GB189725571A
Cited
US636479A
Cited
FR386484A
Cited
US2633096A
Cited
US2668513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |