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US2493183A
Expired / Lapsed
US
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Artillery director
Assignee: AT&T Inc
•
Filing: 1942-05-21
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Granted: 1950-01-03
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Expires: 1962-05-21
Abstract
No abstract record available.
Inventors
- 👤 William H Boghosian
- 👤 Darlington Sidney
- 👤 Henry G Och
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
F; F41; F41G; F41G5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB167191A
Cited
GB164765A
Cited
US1916706A
Cited
US2113436A
Cited
GB458274A
Cited
FR848350A
Cited
US2401779A
Cited
US2408081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |