US3418657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retention device for protective helmet
Assignee: United States Department of the Army
•
Filing: 1966-05-31
•
Granted: 1968-12-31
•
Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Abraham L Lastnik
- 👤 James Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:37
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248366A
Cited
GB530434A
Cited
US2354840A
Cited
US2871484A
Cited
US2802212A
Cited
US3039108A
Cited
US2991478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |