US2487818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antitank mine
Assignee: Individual
•
Filing: 1945-10-17
•
Granted: 1949-11-15
•
Expires: 1965-10-17
Abstract
No abstract record available.
Inventors
- 👤 Charles H Macfarland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:51
CPC Classifications
F; F42; F42B; F42B23/00; F42B23/04; F42B23/08; F42C; F42C15/00; F42C15/38; F42C7/00; F42C7/02; F42C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |