US2919860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically operated by-pass valve
Assignee: Robertshaw Controls Co
•
Filing: 1956-11-30
•
Granted: 1960-01-05
•
Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:51
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/1333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1752116A
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US2045289A
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US1986235A
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US2165136A
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US2336858A
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US2628781A
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US2765983A
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US2810524A
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US2810523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |