Patent JPS5777037A successfully refreshed from Google Patents.
Patent US3495532A successfully refreshed from Google Patents.
US3495532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antitank land mine
Assignee: United States Department of the Army
•
Filing: 1957-02-13
•
Granted: 1970-02-17
•
Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 Claudius H M Roberts
- 👤 John A Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:36
CPC Classifications
F; F42; F42C; F42C14/00; F42C14/08; F42B; F42B23/00; F42B23/04; F42B23/10; F42B23/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE COMBINATION WITH AN ANTITANK LAND MINE FOR BURIAL IN THE GROUND, OF AN EXPLOSIVE CHARGE FOR LOCATION BELOW THE SURFACE OF THE GROUND BUT ABOVE AND ADJACENT TO THE TOP OF SAID MINE, MEANS FOR FIRING SAID CHARGE IN RESPONSE TO MOVEMENT OF A TANK ABOVE SAID MINE AND REMOVAL OF OVERBURDEN ABOVE SAID MINE AND CHARGE, MEANS FOR FIRING SAID MINE IN RESPONSE TO MOVEMENT OF A TANK AFTER FIRING SAID CHARGE AND REMOVAL OF THE OVERBURDEN, SAID MINE INCLUDING A PROPELLING CHARGE WITHIN THE MINE WITH A PROJECTILE TO BE FIRED UPWARDLY BY SAID PROPELLING CHARGE, AND MEANS FOR FIRING SAID PROPELLING CHARGE IN RESPONSE TO MOVEMENT OF A TANK BUT AFTER FIRING OF SAID FIRST-MENTIONED CHARGE AND AFTER FIRING SAID MINE.
Claim 2
Dependent Claim
125 words
THE COMBINATION WITH AN ANTITANK LAND MINE FOR BURIAL IN THE GROUND, OF AN EXPLOSIVE CHARGE FOR LOCATION BELOW THE SURFACE OF THE GROUND BUT ABOVE AND ADJACENT TO THE TOP OF SAID MINE, MEANS FOR FIRING SAID CHARGE IN RESPONSE TO MOVEMENT OF A TANK ABOVE SAID MINE AND REMOVAL OF OVERBURDEN ABOVE SAID MINE AND CHARGE, MEANS FOR FIRING SAID MINE IN RESPONSE TO MOVEMENT OF A TANK AFTER FIRING SAID CHARGE AND REMOVAL OF THE OVERBURDEN, SAID MINE INCLUDING A PROPELLING CHARGE WITHIN THE MINE WITH A PROJECTILE TO BE FIRED UPWARDLY BY SAID PROPELLING CHARGE, AND MEANS FOR FIRING SAID PROPELLING CHARGE IN RESPONSE TO MOVEMENT OF A TANK BUT AFTER FIRING OF SAID FIRST-MENTIONED CHARGE AND AFTER FIRING SAID MINE.
References Cited (Backward Citations)
US728012A
Cited
US1239134A
Cited
US2374179A
Cited
US2351474A
Cited
GB574132A
Cited
US2741180A
Cited
US2446640A
Cited
US2564128A
Cited
US2667836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |