US3045531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical grating
Assignee: Individual
•
Filing: 1956-04-05
•
Granted: 1962-07-24
•
Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Prescott Rochelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:28
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1847; G02B5/1857; G02B5/1866
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US818966A
Cited
US1590532A
Cited
US1565533A
Cited
US1744642A
Cited
US2357913A
Cited
US2463280A
Cited
US2451164A
Cited
US2541437A
Cited
US2642770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |