US2518890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die sinking
Assignee: Individual
•
Filing: 1947-08-07
•
Granted: 1950-08-15
•
Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Heron John Aherne
- 👤 Shaw John
- 👤 Lothar N Hocking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:35
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/06; B22C7/00; B22C7/04; B22C9/02; B22C9/04; B22C9/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1956907A
Cited
US2130710A
Cited
US2274060A
Cited
US2325989A
Cited
US2256338A
Cited
US2372470A
Cited
US2404770A
Cited
US2369960A
Cited
US2447620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |