US3020541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical signal indicator
Assignee: General Electric Co
•
Filing: 1953-10-27
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Granted: 1962-02-06
•
Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank R Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2589249A
Cited
US2456666A
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US2660721A
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US2608683A
Cited
US2745097A
Cited
US2557869A
Cited
US2948892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |