US2358637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically operated valve mechanism
Assignee: Rheem Manufacturing Co
•
Filing: 1941-11-17
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Granted: 1944-09-19
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Expires: 1961-11-17
Abstract
No abstract record available.
Inventors
- 👤 Watson L Hawk
- 👤 Roy N Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/024; G05D23/026; G05D23/027; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896; Y10T74/18904
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) | 1947-09-19 | 1948-03-20 | 1948-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-19 | 1952-03-20 | 1952-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-19 | 1956-03-20 | 1956-09-19 | $7700.00 | Window Closed / Lapsed |