US2595691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal responsive circuit
Assignee: AT&T Inc
•
Filing: 1943-10-05
•
Granted: 1952-05-06
•
Expires: 1963-10-05
Abstract
No abstract record available.
Inventors
- 👤 Jack A Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:46
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/2806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175573A
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US2191565A
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US2219021A
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US2293899A
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US2451000A
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US2412669A
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US2412670A
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US2403562A
Cited
US2415981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |