US3485272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact protective structure and method for manufacturing same
Assignee: United States Department of the Air Force
•
Filing: 1966-10-21
•
Granted: 1969-12-23
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Donald L Schmidt
- 👤 Houston T Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:45
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/02; F16L9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1399308A
Cited
US2039387A
Cited
US1959633A
Cited
US3110324A
Cited
US3326244A
Cited
US3351224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |