Patent US1851765A successfully refreshed from Google Patents.
US1851765A
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Valve controlled radiator
Assignee: JOHN J NESBITT Inc
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Filing: 1930-07-03
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Granted: 1932-03-29
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Expires: 1950-07-03
Abstract
No abstract record available.
Inventors
- 👤 Percival P Henshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:41
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/0002; F24D19/0073; F24D19/10; F24D19/1006; F24D19/1009; F24D19/1015; F24D19/1018; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28F; F28F27/00; F28F27/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87748; Y10T137/87756
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) | 1935-03-29 | 1935-09-28 | 1936-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-29 | 1939-09-28 | 1940-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-29 | 1943-09-28 | 1944-03-29 | $7700.00 | Window Closed / Lapsed |