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US2964635A
Expired / Lapsed
US
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Infra-red-radiation polarizer
Assignee: US Philips Corp
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Filing: 1958-09-08
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Granted: 1960-12-13
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Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Nicolas J Harrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:49
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1751584A
Cited
US1981999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |