US2656984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control device for water heaters
Assignee: Robertshaw Controls Co
•
Filing: 1950-09-22
•
Granted: 1953-10-27
•
Expires: 1970-09-22
Abstract
No abstract record available.
Inventors
- 👤 Michael J Caparone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:18
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/08; G05D23/10; G05D23/024; G05D23/026; G05D23/027; G05D23/19; G05D23/1919; G05D23/20; G05D23/22; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084982A
Cited
US2365615A
Cited
US2379398A
Cited
US2521277A
Cited
US2548516A
Cited
US2480302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |