US2439381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computing bomb sight
Assignee: AT&T Inc
•
Filing: 1943-07-17
•
Granted: 1948-04-13
•
Expires: 1963-07-17
Abstract
No abstract record available.
Inventors
- 👤 Darlington Sidney
- 👤 Charles H Townes
- 👤 Dean E Wooldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/12; F; F41; F41G; F41G3/00; F41G3/22; F41G3/24; G; G06; G06G; G06G7/00; G06G7/48; G06G7/78; G06G7/80; H03H7/00; H03H7/01; H03H7/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB164765A
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US2119607A
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US2251973A
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US2404387A
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US2292159A
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US2385334A
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US2412585A
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US2382994A
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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) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |