US3308261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave oven construction
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1964-05-04
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Granted: 1967-03-07
•
Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Velander Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:30
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/642
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A MICROWAVE OVEN COMPRISING A HOUSING HAVING A METALLIC ENCLOSURE THEREIN, MEANS FOR SUPPLYING HIGH FREQUENCY ENERGY INTO SAID ENCLOSURE, SAID ENCLOSURE BEING ADAPTED TO SUPPORT A LOAD TO BE HEATED THEREIN, MEANS FOR COOLING SAID SUPPLYING MEANS COMPRISING BLOWER MEANS FOR PROVIDING AN AIR STREAM, FIRST DUCT MEANS WITHIN THE HOUSING CONNECTED TO SAID BLOWER MEANS AND TO THE HOUSING FOR CONVEYING AN AIR STREAM PAST SAID SUPPLYING MEANS TO THE EXTERIOR OF SAID HOUSING, AND SECOND DUCT MEANS CONNECTED BETWEEN SAID ENCLOSURE AND SAID FIRST DUCT MEANS DOWNSTREAM FROM SAID SUPPLYING MEANS RESPONSIVE TO THE PASSAGE OF AN AIR STREAM IN SAID FIRST DUCT FOR ASPIRATING AIR AND VAPOR FROM SAID ENCLOSURE INTO SAID FIRST DUCT, WHEREBY THE BUILD-UP OF CONDENSATION WITHIN SAID EN-
Claim 2
Dependent Claim
126 words
A MICROWAVE OVEN COMPRISING A HOUSING HAVING A METALLIC ENCLOSURE THEREIN, MEANS FOR SUPPLYING HIGH FREQUENCY ENERGY INTO SAID ENCLOSURE, SAID ENCLOSURE BEING ADAPTED TO SUPPORT A LOAD TO BE HEATED THEREIN, MEANS FOR COOLING SAID SUPPLYING MEANS COMPRISING BLOWER MEANS FOR PROVIDING AN AIR STREAM, FIRST DUCT MEANS WITHIN THE HOUSING CONNECTED TO SAID BLOWER MEANS AND TO THE HOUSING FOR CONVEYING AN AIR STREAM PAST SAID SUPPLYING MEANS TO THE EXTERIOR OF SAID HOUSING, AND SECOND DUCT MEANS CONNECTED BETWEEN SAID ENCLOSURE AND SAID FIRST DUCT MEANS DOWNSTREAM FROM SAID SUPPLYING MEANS RESPONSIVE TO THE PASSAGE OF AN AIR STREAM IN SAID FIRST DUCT FOR ASPIRATING AIR AND VAPOR FROM SAID ENCLOSURE INTO SAID FIRST DUCT, WHEREBY THE BUILD-UP OF CONDENSATION WITHIN SAID EN-
References Cited (Backward Citations)
GB941434A
Cited
US3127495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |