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US2981454A
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Means for continuously passing cable including rigid housings through a caterpillar cable engine
Assignee: AT&T Inc
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Filing: 1958-06-18
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Granted: 1961-04-25
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Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 Frank R Dickinson
- 👤 Harry N Upthegrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:09
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/22; B; B63; B63B; B63B35/00; B63B35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703777A
Cited
DE636595C
Cited
US2254860A
Cited
US2797798A
Cited
FR1103496A
Cited
US2935178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |