Patent US2480194A successfully refreshed from Google Patents.
US2480194A
Expired / Lapsed
US
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Electrical apparatus
Assignee: United States, WAR, Secretary of
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Filing: 1944-04-26
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Granted: 1949-08-30
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Expires: 1964-04-26
Abstract
No abstract record available.
Inventors
- 👤 Carol G Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:37
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2129713A
Cited
GB177345A
Cited
US1615468A
Cited
US2415962A
Cited
US2427089A
Cited
US2445445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |