US3458864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective hood
Assignee: MSA Safety Inc
•
Filing: 1968-01-22
•
Granted: 1969-08-05
•
Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Harry W Austin
- 👤 William C Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/027; Y; Y10; Y10S; Y10S2/00; Y10S2/901
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US645286A
Cited
US2888011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |