Patent US3465289A successfully refreshed from Google Patents.
Patent US2381631A successfully refreshed from Google Patents.
US2381631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat construction
Assignee: Western Plastics Inc USA
•
Filing: 1944-05-22
•
Granted: 1945-08-07
•
Expires: 1964-05-22
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Waring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:16
CPC Classifications
B; B63; B63B; B63B43/00; B63B43/02; B63B43/10; B63B5/00; B63B5/24; B63B73/00; B63B73/40; B63B73/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1948-08-06 | 1949-02-05 | 1949-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-06 | 1953-02-05 | 1953-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-06 | 1957-02-05 | 1957-08-07 | $7700.00 | Window Closed / Lapsed |