Patent US1800150A successfully refreshed from Google Patents.
US1800150A
Expired / Lapsed
US
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Heating and cooling of buildings
Assignee: Individual
•
Filing: 1928-01-19
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Granted: 1931-04-07
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Expires: 1948-01-19
Abstract
No abstract record available.
Inventors
- 👤 Musgrave Joseph Leslie
- 👤 Herring Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:44
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/06; F25D23/061; F24; F24D; F24D3/00; F24D3/12; F24D3/14; F24D3/141; F25B; F25B2339/00; F25B2339/02; F25B2339/023; F28; F28F; F28F2275/00; F28F2275/02; F28F2275/025; Y; Y02; Y02B; Y02B30/00; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359
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) | 1934-04-06 | 1934-10-06 | 1935-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-06 | 1938-10-06 | 1939-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-06 | 1942-10-06 | 1943-04-07 | $7700.00 | Window Closed / Lapsed |