Patent US4407113A successfully refreshed from Google Patents.
US2940481A
Expired / Lapsed
US
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Method and apparatus for installing radiant heating cables
Assignee: Individual
•
Filing: 1955-11-04
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Granted: 1960-06-14
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Expires: 1975-11-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; F24D13/024; E; E01; E01C; E01C23/00; Y; Y02; Y02B; Y02B30/00; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1993348A
Cited
US2086086A
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US2385973A
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US2402696A
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US2380117A
Cited
US2385796A
Cited
US2685128A
Cited
GB661155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |