US2492731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracer control system
Assignee: General Electric Co
•
Filing: 1944-08-14
•
Granted: 1949-12-27
•
Expires: 1964-08-14
Abstract
No abstract record available.
Inventors
- 👤 Norman G Branson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123; B23Q2735/00; B23Q2735/02; B23Q2735/06; B23Q2735/065; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/303416; Y10T409/303472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2074396A
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US1998939A
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US2116593A
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GB489271A
Cited
GB505470A
Cited
US2307503A
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US2310955A
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US2363342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |