US2958827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical cancellation and indicating system
Assignee: Individual
•
Filing: 1943-09-02
•
Granted: 1960-11-01
•
Expires: 1963-09-02
Abstract
No abstract record available.
Inventors
- 👤 Warren A Anderson
- 👤 James E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/12; G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1959388A
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US1990023A
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US2041245A
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US2147756A
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US2136621A
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US2132205A
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US2286170A
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US2226706A
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GB543117A
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FR837587A
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US2313209A
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US2312203A
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US2340002A
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US2409012A
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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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |