Patent US2897331A successfully refreshed from Google Patents.
US2897331A
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US
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Temperature control device
Assignee: Robertshaw Controls Co
•
Filing: 1955-11-09
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Granted: 1959-07-28
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Expires: 1975-11-09
Abstract
No abstract record available.
Inventors
- 👤 Maynard D Mcfarlane
- 👤 Cecil A Crafts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:37
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27536
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1634586A
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US1528053A
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US1921432A
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US1904771A
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US2158136A
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US2524886A
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US2516570A
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US2640089A
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US2726312A
Cited
US2762895A
Cited
US2767296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |