US2483281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching system
Assignee: CONTROL INSTR CO Inc
•
Filing: 1947-09-17
•
Granted: 1949-09-27
•
Expires: 1967-09-17
Abstract
No abstract record available.
Inventors
- 👤 Donald L Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:20
CPC Classifications
H; H04; H04Q; H04Q9/00; H04Q9/04; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1702423A
Cited
US1765538A
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US1969369A
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US1973539A
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US2046381A
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US2088942A
Cited
US2087674A
Cited
US2147656A
Cited
US2183022A
Cited
US2356083A
Cited
US2361229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-26 | 1953-03-28 | 1953-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-26 | 1957-03-28 | 1957-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-26 | 1961-03-28 | 1961-09-27 | $7700.00 | Window Closed / Lapsed |