Patent US2645764A successfully refreshed from Google Patents.
US2645764A
Expired / Lapsed
US
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Intelligence exchange system
Assignee: International Standard Electric Corp
•
Filing: 1950-06-14
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Granted: 1953-07-14
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Expires: 1970-06-14
Abstract
No abstract record available.
Inventors
- 👤 Mcwhirter Eric Malcolm Swift
- 👤 Vernon Mount
- 👤 Frederick G Popp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:48
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/487; H04M3/493; H04M3/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US449543A
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US1711041A
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US1331151A
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US1716600A
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US1906646A
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US1992271A
Cited
US2088942A
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US2224244A
Cited
US2080100A
Cited
US2264052A
Cited
US2398067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |