US3173666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cowper gas-heating ovens
Assignee: Individual
•
Filing: 1963-03-18
•
Granted: 1965-03-16
•
Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Petit Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:35
CPC Classifications
C; C21; C21B; C21B9/00; F; F28; F28D; F28D17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A COWPER GAS-HEATING OVEN, COMPRISING A HOLLOW BODY OF CIRCULAR SECTION, A DOME, MEANS SUPPORTING THE DOME SO AS TO CLOSE-OFF THE INTERIOR OF SAID HOLLOW BODY, A BURNER, MEANS POSITIONING SAID BURNER AT THE OUTSIDE OF SAID HOLLOW BODY, SAID POSITIONING MEANS DEFINING AN ELONGATED COMBUSTION PASSAGE LEADING FROM SAID BURNER TO THE INTERIOR OF SAID HOLLOW BODY, SAID COMBUSTION PASSAGE BEING OUTSIDE OF SAID HOLLOW BODY AND OF A LENGTH SUFFICIENT TO PERMIT SUBSTANTIALLY COMPLETE COMBUSTION OF A COMBUSTIBLE GAS THEREIN.
Claim 2
Dependent Claim
83 words
A COWPER GAS-HEATING OVEN, COMPRISING A HOLLOW BODY OF CIRCULAR SECTION, A DOME, MEANS SUPPORTING THE DOME SO AS TO CLOSE-OFF THE INTERIOR OF SAID HOLLOW BODY, A BURNER, MEANS POSITIONING SAID BURNER AT THE OUTSIDE OF SAID HOLLOW BODY, SAID POSITIONING MEANS DEFINING AN ELONGATED COMBUSTION PASSAGE LEADING FROM SAID BURNER TO THE INTERIOR OF SAID HOLLOW BODY, SAID COMBUSTION PASSAGE BEING OUTSIDE OF SAID HOLLOW BODY AND OF A LENGTH SUFFICIENT TO PERMIT SUBSTANTIALLY COMPLETE COMBUSTION OF A COMBUSTIBLE GAS THEREIN.
References Cited (Backward Citations)
US2232121A
Cited
US660037A
Cited
US1114403A
Cited
US2141036A
Cited
US2163149A
Cited
US2263848A
Cited
FR1087076A
Cited
US3024014A
Cited
US3006626A
Cited
US3122359A
Cited
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 |