US3108170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating element
Assignee: Individual
•
Filing: 1958-02-17
•
Granted: 1963-10-22
•
Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Maxwell K Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:55
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05B3/262; Y; Y10; Y10S; Y10S428/00; Y10S428/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A SHEET TYPE ELECTRIC RESISTANCE RADIANT HEATER ADAPTED FOR WALL MOUNTING COMPRISING A METL PLATE HAVING A VITREOUS COATING ON THE RADIATING SIDE THEREOF, THE OPPOSITE SIDE OF SAID PLATE HAVING A LAYER OF PERFLUOROCARBON RESIN OF DIELECTRIC AND HEAT RESISTANT CHARACTERISTICS ADHERED THERETO WITH A METALLIC RESISTANCE GRID ADHERED TO THE EXPOSED SURFACE OF SAID RESIN LAYER.
Claim 2
Dependent Claim
58 words
A SHEET TYPE ELECTRIC RESISTANCE RADIANT HEATER ADAPTED FOR WALL MOUNTING COMPRISING A METL PLATE HAVING A VITREOUS COATING ON THE RADIATING SIDE THEREOF, THE OPPOSITE SIDE OF SAID PLATE HAVING A LAYER OF PERFLUOROCARBON RESIN OF DIELECTRIC AND HEAT RESISTANT CHARACTERISTICS ADHERED THERETO WITH A METALLIC RESISTANCE GRID ADHERED TO THE EXPOSED SURFACE OF SAID RESIN LAYER.
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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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |