US2773422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarizing universal sun glasses
Assignee: Individual
•
Filing: 1953-11-25
•
Granted: 1956-12-11
•
Expires: 1973-11-25
Abstract
No abstract record available.
Inventors
- 👤 Sr William D Flynn
- 👤 Jr William D Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |