Patent US2431146A successfully refreshed from Google Patents.
US2431146A
Expired / Lapsed
US
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Air-conditioning unit
Assignee: Individual
•
Filing: 1944-01-18
•
Granted: 1947-11-18
•
Expires: 1964-01-18
Abstract
No abstract record available.
Inventors
- 👤 Steele Raymond James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:54
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007; B60H1/00021; B60H1/00035; B60H1/0005; B60H1/32; B60H1/3202; B60H2001/00114; B60H2001/00142; B60H2001/0015; B60H2001/00157; B60H2001/00171; Y; Y10; Y10S; Y10S261/00; Y10S261/04
Claims Analysis
Total Claims: 0
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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) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |