Patent US2489478A successfully refreshed from Google Patents.
US2489478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard motor unit construction
Assignee: NAT PRESSURE COOKER CO
•
Filing: 1947-01-11
•
Granted: 1949-11-29
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 Gilbert E Buske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/32; B63H20/24; B63H20/245; B63H20/34; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB296226A
Cited
US1893661A
Cited
US2021309A
Cited
US2143573A
Cited
US2212939A
Cited
US2351050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |