Patent US1455846A successfully refreshed from Google Patents.
US1455846A
Expired / Lapsed
US
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Air-conditioning or humidifying and heating system
Assignee: Carrier Engineering Corp
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Filing: 1920-02-20
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Granted: 1923-05-22
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Expires: 1940-02-20
Abstract
No abstract record available.
Inventors
- 👤 Leo L Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:15
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/12; Y; Y10; Y10S; Y10S261/00; Y10S261/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-05-21 | 1926-11-20 | 1927-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-21 | 1930-11-20 | 1931-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-21 | 1934-11-20 | 1935-05-22 | $7700.00 | Window Closed / Lapsed |