US2648047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide calorimeter wattmeter
Assignee: United States Department of the Navy
•
Filing: 1945-08-04
•
Granted: 1953-08-04
•
Expires: 1965-08-04
Abstract
No abstract record available.
Inventors
- 👤 Lowell M Hollingsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/26; H01P1/264; G; G01; G01R; G01R21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2197122A
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US2197123A
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US2273547A
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US2398606A
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US2430130A
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US2438915A
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US2427094A
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US2464277A
Cited
US2409599A
Cited
US2453645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |