US3021527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face shield for detachable mounting on a safety helmet, and a safety helmet for use in connection with the face shield
Assignee: Individual
•
Filing: 1958-06-23
•
Granted: 1962-02-20
•
Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 Larsen Hans Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:07
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/18; A42B3/22; A42B3/225; A61; A61F; A61F9/00; A61F9/04; A61F9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2326376A
Cited
US2358978A
Cited
US2588553A
Cited
US2759188A
Cited
FR1096543A
Cited
US2801423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |