US3416944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ablative product and method for its manufactur
Assignee: United States Department of the Air Force
•
Filing: 1964-10-26
•
Granted: 1968-12-17
•
Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Paul F Pirrung
- 👤 Donald L Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C04B35/515; C04B35/52; C04B35/522; Y; Y10; Y10S; Y10S60/00; Y10S60/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2853969A
Cited
US3177084A
Cited
US2922722A
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US2972552A
Cited
US3238054A
Cited
US3206331A
Cited
US3252824A
Cited
US3216195A
Cited
US3242000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |