Patent US3174028A successfully refreshed from Google Patents.
US3174028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Range top heater assembly
Assignee: Edwin L Wiegand Co
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Filing: 1961-07-20
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Granted: 1965-03-16
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Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 George E Ammerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:45
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/68; H05B3/76; Y; Y10; Y10S; Y10S439/00; Y10S439/919; Y10S439/928
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A RANGE TOP HEATING UNIT COMPRISING AN ELONGATED, METALLIC, TUBULAR SHEATHED ELECTRIC RESISTANCE HEATED ELEMENT HAVING AN INTERMEDIATE HEAT-GENERATING PORTION CONVOLUTED TO PROVIDE A GENERALLY PLANE HEATING SURFACE REMOVABLY SUPPORTED BY THE RANGE IN A GENERALLY HORIZONTAL POSITION FOR UNDERLYING AND SUPPORTING A VESSEL TO BE HEATED AND HAVING TERMINAL END PORTIONS DISPOSED IN FIXED SIDE-BY-SIDE, SPACED-APART RELATION BENEATH SAID HEATING SURFACE AND PROJECTING BEYOND THE LATTER''S PERIPHERY FOR CONDUCTING ELECTRICAL ENERGY TO SAID HEAT-GENERATING ELE-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |