US3054111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbing helmet
Assignee: MSA Safety Inc
•
Filing: 1959-01-14
•
Granted: 1962-09-18
•
Expires: 1979-01-14
Abstract
No abstract record available.
Inventors
- 👤 Robert R Hornickel
- 👤 Harry W Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:20
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2585937A
Cited
US2796609A
Cited
US2758305A
Cited
GB760558A
Cited
US2795792A
Cited
US2895136A
Cited
US2858538A
Cited
US2879513A
Cited
US2921318A
Cited
US2971195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |