US3444561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding goggle
Assignee: C & D ACQUISITION CORP A CORP OF DE
•
Filing: 1966-06-23
•
Granted: 1969-05-20
•
Expires: 1986-06-23
Abstract
No abstract record available.
Inventors
- 👤 Charles J Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:50
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/04; A61F9/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2055117A
Cited
US2186817A
Cited
US2726395A
Cited
US3016542A
Cited
US3212101A
Cited
US3278943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |