US2275602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light diffusing lens
Assignee: ALNCIN Inc
•
Filing: 1938-10-03
•
Granted: 1942-03-10
•
Expires: 1958-10-03
Abstract
No abstract record available.
Inventors
- 👤 Earl W Beck
- 👤 Walker Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:02
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/02; G02B5/0273; G02B5/0278; G02B5/0205; G02B5/021; G02B5/0221; G02B5/0268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-03-09 | 1945-09-08 | 1946-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-09 | 1949-09-08 | 1950-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-09 | 1953-09-08 | 1954-03-10 | $7700.00 | Window Closed / Lapsed |