US3444569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-sea rescue device with flotation collar
Assignee: Kaman Corp
•
Filing: 1967-06-21
•
Granted: 1969-05-20
•
Expires: 1987-06-21
Abstract
No abstract record available.
Inventors
- 👤 Avrom Greenberg
- 👤 William H Brown Jr
- 👤 Clifford B Packard
- 👤 George I Hackenberger Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:16
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2145289A
Cited
US2700781A
Cited
FR1117043A
Cited
US2950489A
Cited
US3036315A
Cited
US3215111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |