Patent US2458348A successfully refreshed from Google Patents.
US2458348A
Expired / Lapsed
US
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Electric resistance film hygrometer
Assignee: Eastman Kodak Co
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Filing: 1944-05-06
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Granted: 1949-01-04
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Expires: 1964-05-06
Abstract
No abstract record available.
Inventors
- 👤 Harry W Cleveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:34
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1293527A
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US1749826A
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US2064651A
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US2047638A
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US2175893A
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US2237006A
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US2255734A
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US2234858A
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US2285421A
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US2358406A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |