US2904790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headgear with face shield
Assignee: Bullard Co
•
Filing: 1956-05-03
•
Granted: 1959-09-22
•
Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Ruggiero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:24
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/18; A42B3/22; A42B3/225; A61; A61F; A61F9/00; A61F9/04; A61F9/06; H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40; H01C10/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2111747A
Cited
US2167969A
Cited
US2239978A
Cited
US2283120A
Cited
US2402431A
Cited
US2552180A
Cited
US2801420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |