Patent US2788955A successfully refreshed from Google Patents.
US2788955A
Expired / Lapsed
US
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Apparatus for changing the temperature of a room
Assignee: Individual
•
Filing: 1953-09-17
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Granted: 1957-04-16
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Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Cloyd D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:44
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; B; B60; B60H; B60H1/00; B60H1/00007; B60H1/00021; B60H1/32; B60H1/3202; F24F5/0035; F24F6/00; F24F6/02; F24F6/04; Y; Y02; Y02B; Y02B30/00; Y02B30/54
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) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |