US3391407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helmet
Assignee: Individual
•
Filing: 1966-08-15
•
Granted: 1968-07-09
•
Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 William A Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:09
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/28; A42B3/286; Y; Y10; Y10S; Y10S2/00; Y10S2/905; Y10S2/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US263980A
Cited
US290017A
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US340793A
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US432728A
Cited
US594209A
Cited
US735790A
Cited
US2335630A
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US2769308A
Cited
US3070803A
Cited
US3168748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |