US2659861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrical thickness measurement
Assignee: Branson Ultrasonics Corp
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Filing: 1951-11-01
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Granted: 1953-11-17
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Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Norman G Branson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; D; D06; D06M; D06M13/00; D06M13/322; D06M13/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2142619A
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US2186826A
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US2195504A
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US2459730A
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US2586868A
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US2476943A
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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) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |