Patent US1991179A successfully refreshed from Google Patents.
Patent US3235178A successfully refreshed from Google Patents.
US3235178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air aspirating apparatus for heating or cooling buildings
Assignee: Calmac Manufacturing Corp
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Filing: 1964-07-07
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Granted: 1966-02-15
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 George N Miles
- 👤 Frank W Bailey
- 👤 Calvin D Maccracken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:40
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/01; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
CONTROLLABLE ASPIRATING APPARATUS FOR MAINTAINING A ROOM AT A COMFORTABLE LIVING TEMPERATURE BY SUPPLYING AIR OF EXTREME TEMPERATURE MIXED WITH A GREATER AMOUNT OF AIR DRAWN FROM THE ROOM, COMPRISING A NOZZLE ADAPTED TO BE FED WITH SUPPLY AIR OF HIGH VELOCITY AND EXTREME TEMPERATURE, SAID NOZZLE HAVING A LONG AND NARROW ORIFICE OF A WIDTH LESS THAN 1/4 OF AN INCH FOR EJECTING THE SUPPLY AIR AS A FAST MOVING LAYER, A CONTINUOUSLY CURVED CONVEX GUIDE SURFACE EXTENDING OUTWARDLY AWAY FROM SAID NOZZLE FROM AN INITIAL AREA ADJACENT TO ONE SIDE OF SAID
References Cited (Backward Citations)
US1878012A
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US2345537A
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US2432289A
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US2490379A
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US2523497A
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US2680355A
Cited
US2821897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |