US2059846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for air conditioning apparatus
Assignee: Petroleum Heat & Power Co
•
Filing: 1932-11-05
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Granted: 1936-11-03
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Expires: 1952-11-05
Abstract
No abstract record available.
Inventors
- 👤 William A Bulger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; Y; Y10; Y10S; Y10S236/00; Y10S236/13
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) | 1939-11-03 | 1940-05-04 | 1940-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-03 | 1944-05-04 | 1944-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-03 | 1948-05-04 | 1948-11-03 | $7700.00 | Window Closed / Lapsed |