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US2870242A
Expired / Lapsed
US
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Conduit protecting sheath
Assignee: Individual
•
Filing: 1954-05-13
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Granted: 1959-01-20
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Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Edward D Wilkerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:06
CPC Classifications
F; F16; F16L; F16L5/00; H; H02; H02G; H02G3/00; H02G3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408336A
Cited
US1759043A
Cited
US1829512A
Cited
US2092270A
Cited
US2034928A
Cited
US2258745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |