US3047273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: Gulf Research and Development Co
•
Filing: 1959-07-31
•
Granted: 1962-07-31
•
Expires: 1979-07-31
Abstract
No abstract record available.
Inventors
- 👤 Jr John Scarr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1955797A
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US2257540A
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US2397987A
Cited
US2561067A
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US2558610A
Cited
US2842345A
Cited
US2759070A
Cited
US2780279A
Cited
US2803723A
Cited
US2865610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |