Patent US3490692A successfully refreshed from Google Patents.
US3490692A
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Calibrated control device and method
Assignee: Robertshaw Controls Co
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Filing: 1967-07-25
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Granted: 1970-01-20
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Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Francis S Genbauffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:36
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; G05D23/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3125293A
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US1822668A
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US2111560A
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US2697581A
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US2748224A
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US2994755A
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US3293394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |