Patent US3177344A successfully refreshed from Google Patents.
US3177344A
Expired / Lapsed
US
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Shielded electric heating mantle
Assignee: Templeton Coal Co
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Filing: 1962-11-08
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Granted: 1965-04-06
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Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Glen H Morey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:41
CPC Classifications
B; B01; B01L; B01L7/00; A; A47; A47J; A47J27/00; A47J27/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1622587A
Cited
GB324324A
Cited
US1961136A
Cited
FR994293A
Cited
US2607876A
Cited
GB713742A
Cited
DE938820C
Cited
FR1166688A
Cited
US2955191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |