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US2524784A
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Assignee: CHICAGO TELEPHONE SUPPLY Co
•
Filing: 1946-01-24
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Granted: 1950-10-10
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Expires: 1966-01-24
Abstract
No abstract record available.
Inventors
- 👤 Albert E Franks
- 👤 Mervin B Arisman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:36
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1655614A
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US1474013A
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GB387831A
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US2090470A
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US2131590A
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US2235366A
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US2304808A
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US2286162A
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US2314855A
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US2329460A
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US2408843A
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |