US3069974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layered light polarizers
Assignee: Individual
•
Filing: 1959-11-12
•
Granted: 1962-12-25
•
Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Alvin M Murks
- 👤 Mortimer M Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3066; G02B5/3033
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2402176A
Cited
GB457542A
Cited
GB460666A
Cited
US2252898A
Cited
US2403731A
Cited
US2453379A
Cited
US2687673A
Cited
US2887566A
Cited
US2982178A
Cited
US3024701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |