US3545865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectropolarimeter
Assignee: PAIGE B HOOPER
•
Filing: 1969-11-10
•
Granted: 1970-12-08
•
Expires: 1989-11-10
Abstract
No abstract record available.
Inventors
- 👤 Paige B Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J4/00; G01J4/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2654287A
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US2587451A
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US2660086A
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US2813451A
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US2768306A
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US2933972A
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US3098408A
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US3164662A
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US3155762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |