Patent US3218975A successfully refreshed from Google Patents.
US3218975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped charge liner
Assignee: Individual
•
Filing: 1950-06-28
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Granted: 1965-11-23
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Expires: 1970-06-28
Abstract
No abstract record available.
Inventors
- 👤 Mark F Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:01
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02; F42B1/028
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |