Patent US3249737A successfully refreshed from Google Patents.
US3249737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable heater
Assignee: Individual
•
Filing: 1964-01-20
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Granted: 1966-05-03
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 John S Casebeer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:36
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PORTABLE ELECTRIC HEATER COMPRISING, A HOUSING OF TWO SECTIONS IN TELESCOPING RELATION, ONE OF SAID SECTIONS BEING A BASE SECTION AND HAVING A BOTTOM WALL AND A PERIPHERAL WALL UPSTANDING THEREFROM AND DEFINING AN OPEN TOP, THE OTHER SECTION BEING AN UPPER SECTION AND HAVING AN UPRIGHT WALL DEFINING AN OPEN TOP WITH AN OUTER SURFACE SUBSTANTIALLY CONFORMING IN SIZE AND SHAPE TO AN INNER SURFACE OF THE PERIPHERAL WALL OF THE BASE SECTION FOR RELATIVE VERTICAL MOVEMENT TO ELONGATE THE HOUSING, FIBROUS HEAT INSULATION LINING SAID WALL OF THE UPPER SECTION WITH A PORTION OF SAID INSULATION EXTENDING UPWARDLY THEREFROM AND FORMING A YIELDABLE EXTENSION TO SAID UPPER SECTION WALL AND AROUND THE TOP THEREOF FOR ENGAGING AND CONFORMING TO SURFACE CONTUOR OF AN OBJECT TO BE HEATED, SAID EXTENSION AND UPPER SECTION
Claim 2
Dependent Claim
135 words
A PORTABLE ELECTRIC HEATER COMPRISING, A HOUSING OF TWO SECTIONS IN TELESCOPING RELATION, ONE OF SAID SECTIONS BEING A BASE SECTION AND HAVING A BOTTOM WALL AND A PERIPHERAL WALL UPSTANDING THEREFROM AND DEFINING AN OPEN TOP, THE OTHER SECTION BEING AN UPPER SECTION AND HAVING AN UPRIGHT WALL DEFINING AN OPEN TOP WITH AN OUTER SURFACE SUBSTANTIALLY CONFORMING IN SIZE AND SHAPE TO AN INNER SURFACE OF THE PERIPHERAL WALL OF THE BASE SECTION FOR RELATIVE VERTICAL MOVEMENT TO ELONGATE THE HOUSING, FIBROUS HEAT INSULATION LINING SAID WALL OF THE UPPER SECTION WITH A PORTION OF SAID INSULATION EXTENDING UPWARDLY THEREFROM AND FORMING A YIELDABLE EXTENSION TO SAID UPPER SECTION WALL AND AROUND THE TOP THEREOF FOR ENGAGING AND CONFORMING TO SURFACE CONTUOR OF AN OBJECT TO BE HEATED, SAID EXTENSION AND UPPER SECTION
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |