US2645741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic scanning apparatus
Assignee: Individual
•
Filing: 1948-03-29
•
Granted: 1953-07-14
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Westervelt Robert Alanson
- 👤 Robert L Cummerow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042; H01; H01J; H01J31/00; H01J31/02; H01J31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1603283A
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US1893741A
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US1977974A
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US2266671A
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US2197042A
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US2217774A
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US2221743A
Cited
US2395299A
Cited
US2293368A
Cited
US2358542A
Cited
US2269688A
Cited
US2474960A
Cited
US2494670A
Cited
US2533401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |