Patent US2952001A successfully refreshed from Google Patents.
US2952001A
Expired / Lapsed
US
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Electrical heating tape and method of making
Assignee: Linton-Summit Coal Co Inc
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Filing: 1958-08-04
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Granted: 1960-09-06
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Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Glen H Morey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:42
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H05B3/565
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1007441A
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US1614331A
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GB279523A
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US2341219A
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US2386095A
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US2610286A
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US2584302A
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US2822777A
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US2811132A
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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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |