Patent US3358670A successfully refreshed from Google Patents.
US3358670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air heater utilizing cooking stove heating elements
Assignee: Individual
•
Filing: 1965-10-20
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Granted: 1967-12-19
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Charles D Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:19
CPC Classifications
F; F24; F24C; F24C1/00; F24C1/14; F24C15/00; F24C15/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN COMBINATION, A KITCHEN STOVE PROVIDING A SOURCE OF HEAT ENERGY AND A SPACE HEATER HAVING A FRAME INCLUDING COOL AIR INLET MEANS, HEATED AIR OUTLET MEANS, A PLURALITY OF METALLIC CONDUITS COMMUNICATING BETWEEN SAID COOL AIR INLET MEANS AND SAID HEATED AIR OUTLET MEANS, SAID SOURCE OF HEAT ENERGY BEING CLOSELY ADJAENT SAID METALLIC CONDUITS, BLOWER MEANS MOUNTED ON SAID FRAME FOR FORCIBLY EJECTING HEATED AIR FROM SAID HEATER, SAID BLOWER MEANS
Claim 2
Dependent Claim
73 words
IN COMBINATION, A KITCHEN STOVE PROVIDING A SOURCE OF HEAT ENERGY AND A SPACE HEATER HAVING A FRAME INCLUDING COOL AIR INLET MEANS, HEATED AIR OUTLET MEANS, A PLURALITY OF METALLIC CONDUITS COMMUNICATING BETWEEN SAID COOL AIR INLET MEANS AND SAID HEATED AIR OUTLET MEANS, SAID SOURCE OF HEAT ENERGY BEING CLOSELY ADJAENT SAID METALLIC CONDUITS, BLOWER MEANS MOUNTED ON SAID FRAME FOR FORCIBLY EJECTING HEATED AIR FROM SAID HEATER, SAID BLOWER MEANS
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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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |