Patent US3001029A successfully refreshed from Google Patents.
US3001029A
Expired / Lapsed
US
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Automatic telecommunication exchanges
Assignee: International Standard Electric Corp
•
Filing: 1957-11-25
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Granted: 1961-09-19
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick Harry Bray
- 👤 Ronald George Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:20
CPC Classifications
A; A45; A45D; A45D8/00; A45D8/38; H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2603713A
Cited
US2724018A
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US2694753A
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US2838610A
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US2872524A
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US2816168A
Cited
US2808459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |