Patent US3172995A successfully refreshed from Google Patents.
US3172995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface heating unit for spill-proof cooktop
Assignee: General Electric Co
•
Filing: 1963-01-03
•
Granted: 1965-03-09
•
Expires: 1983-01-03
Abstract
No abstract record available.
Inventors
- 👤 Norman W Kirschke
- 👤 Hurko Bohdan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:00
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/10; F24C15/102; F24C15/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
AN ELECTRIC HEATING UNIT COMPRISING A COMBINATION A HORIZONTAL COOKING SURFACE HAVING A RECESSED PROTION, A RESISTANCE HEATING ELEMENT SUPPORTED OVER THE RECESSED PORTION, THE ELEMENT HAVING A CROSS-SECTIONAL DIAMETER BETWEEN ABOUT .120 INCH AND .180 INCH AND BEING CLOSELY WOUND INTO A FLAT COIL THAT IS SUPPORTED ON TOP OF AN OPEN FRAMEWORK, A CLOSURE MEMBER FOR SEALING THE OTHERWISE-OPEN CENTRAL PORTION OF THE COIL, A PAIR OF VERTICALLY SPACED REFLECTOR PANS LOCATED BENEATH THE HEAT ING ELEMENT AND FASTENED TO THE SAID FRAMEWORK, AND DRAINING MEANS FOR EACH REFLECTOR PAN SO THAT LIQUIDS WILL NOT REMAIN IN THE PANS BUT WILL FLOW INTO THE RECESSED PORTION.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |