US2643288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calibrating apparatus
Assignee: Individual
•
Filing: 1944-05-25
•
Granted: 1953-06-23
•
Expires: 1964-05-25
Abstract
No abstract record available.
Inventors
- 👤 La Verne R Philpott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2103090A
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US2178074A
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US2121359A
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US2227598A
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US2432196A
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US2280531A
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US2332300A
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US2364756A
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US2426216A
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US2438904A
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US2414477A
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US2477615A
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US2420516A
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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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |