US2465792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: Alcoa Corp
•
Filing: 1944-07-23
•
Granted: 1949-03-29
•
Expires: 1964-07-23
Abstract
No abstract record available.
Inventors
- 👤 Le Roy W Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:56
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1049572A
Cited
GB234189A
Cited
GB248720A
Cited
US1854455A
Cited
US2024285A
Cited
US2119137A
Cited
US2077688A
Cited
US2244954A
Cited
US2324547A
Cited
US2344358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |