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US2986633A
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US
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Infra-red analysing apparatus
Assignee: Sir Howard Grubb Parsons and Co Ltd
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Filing: 1957-11-13
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Granted: 1961-05-30
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Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 Albert E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:50
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2721942A
Cited
US2741703A
Cited
US2844066A
Cited
US2718597A
Cited
US2904686A
Cited
US2904687A
Cited
US2875340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |