US2455421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means for air conditioning apparatus
Assignee: ADVANCE MANUFACTURING Inc
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Filing: 1946-06-03
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Granted: 1948-12-07
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Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Henry O Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3226; F; F24; F24F; F24F5/00; F24F5/0003; F25; F25B; F25B41/00; F25B41/20; F25B49/00; F25B49/02; F25B2400/00; F25B2400/04; F25B2400/0403; F25B2400/0409; F25B2400/0411; F25B27/00; F25B41/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |