US2835186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: Whirlpool Corp
•
Filing: 1954-06-01
•
Granted: 1958-05-20
•
Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:50
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/0604; F24D; F24D5/00; F24D5/02; F24F3/00; F24F3/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2134588A
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US2125542A
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US2140829A
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US2210458A
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US2708833A
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US2760354A
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |