US3413057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectacle supported pivoted auxiliary eye protectors
Assignee: American Optical Corp
•
Filing: 1965-09-22
•
Granted: 1968-11-26
•
Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Walter C Carmichael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:45
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/16; G02C9/00; G02C9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1249908A
Cited
US1709195A
Cited
GB305513A
Cited
US1899905A
Cited
US2132346A
Cited
US2671379A
Cited
US2680847A
Cited
US2714717A
Cited
US2818774A
Cited
DE1097716B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |