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Patent US2137024A successfully refreshed from Google Patents.
US2137024A
Expired / Lapsed
US
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Apparatus for controlling heating systems
Assignee: Warren Webster & Co
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Filing: 1936-04-22
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Granted: 1938-11-15
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Expires: 1956-04-22
Abstract
No abstract record available.
Inventors
- 👤 Ray C Moore
- 👤 Clay H Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:27
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1902; G05D23/1904; Y; Y10; Y10S; Y10S200/00; Y10S200/40; 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) | 1941-11-14 | 1942-05-16 | 1942-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-14 | 1946-05-16 | 1946-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-14 | 1950-05-16 | 1950-11-15 | $7700.00 | Window Closed / Lapsed |