US2867781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave spectrometer absorption cells
Assignee: Unisys Corp
•
Filing: 1954-11-26
•
Granted: 1959-01-06
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Expires: 1974-11-26
Abstract
No abstract record available.
Inventors
- 👤 Tomiyasu Kiyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:12
CPC Classifications
G; G01; G01N; G01N22/00; G01N22/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2707231A
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US2641702A
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US2688732A
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US2659860A
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US2685068A
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US2738470A
Cited
US2743048A
Cited
US2773245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |