Patent US4999973A successfully refreshed from Google Patents.
Patent US1380141A successfully refreshed from Google Patents.
US1380141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting-dock
Assignee: Individual
•
Filing: 1918-07-06
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Granted: 1921-05-31
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Expires: 1938-07-06
Abstract
No abstract record available.
Inventors
- 👤 Hamilton Thomas Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
B; B63; B63C; B63C1/00; B63C1/02; B63C1/06; B63B; B63B71/00; E; E02; E02C; E02C5/00; E02C5/02
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) | 1924-05-30 | 1924-11-29 | 1925-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-30 | 1928-11-29 | 1929-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-30 | 1932-11-29 | 1933-05-31 | $7700.00 | Window Closed / Lapsed |