US3522985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-transmission light polarizer
Assignee: Polaroid Corp
•
Filing: 1965-10-23
•
Granted: 1970-08-04
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:11
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2152297A
Cited
US2180114A
Cited
US2270535A
Cited
US2420279A
Cited
US2700919A
Cited
US3060808A
Cited
US3218926A
Cited
US3274881A
Cited
US3213753A
Cited
US3329474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |