Patent US3255337A successfully refreshed from Google Patents.
US3255337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heating pad for floors
Assignee: Individual
•
Filing: 1963-09-23
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Granted: 1966-06-07
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Willat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:19
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN ELECTRICALLY HEATED FLOOR PAD WHICH INCLUDES A PAIR OF RELATIVELY OPPOSED FLEXIBLE WATERPROOF EXTERIOR SHEETS OF ELECTRICAL INSULATION MATEIRAL, A FLEXIBLE FLAT STRIP OF ELECTRICAL HEATING ELEMENT OF MATERIAL FUSIBLE AT A TEMPERATURE LOWER THAN COMBUSTION TEMPERATURE OF READILY COMBUSTIBLE PRODUCTS, SAID STRIP OF HEATING ELEMENT BEING STRUNG BACK AND FORTH TRANSVERSELY ACROSS AND BETWEEN OPPOSED FACES OF SAID FLEXIBLE EXTERIOR SHEETS, SAID STRIP OF HEATING ELEMENT BEING RETROVERTED UPON ITSELF AT THE
Claim 2
Dependent Claim
74 words
AN ELECTRICALLY HEATED FLOOR PAD WHICH INCLUDES A PAIR OF RELATIVELY OPPOSED FLEXIBLE WATERPROOF EXTERIOR SHEETS OF ELECTRICAL INSULATION MATEIRAL, A FLEXIBLE FLAT STRIP OF ELECTRICAL HEATING ELEMENT OF MATERIAL FUSIBLE AT A TEMPERATURE LOWER THAN COMBUSTION TEMPERATURE OF READILY COMBUSTIBLE PRODUCTS, SAID STRIP OF HEATING ELEMENT BEING STRUNG BACK AND FORTH TRANSVERSELY ACROSS AND BETWEEN OPPOSED FACES OF SAID FLEXIBLE EXTERIOR SHEETS, SAID STRIP OF HEATING ELEMENT BEING RETROVERTED UPON ITSELF AT THE
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |