US3400374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computerized control systems
Assignee: Robertshaw Controls Co
•
Filing: 1965-06-16
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Granted: 1968-09-03
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Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Paul A Schumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:43
CPC Classifications
G; G05; G05B; G05B15/00; G05B15/02; F; F24; F24F; F24F11/00; F24F11/62; F24F11/63; F24F11/64; F24F11/70; F24F11/80; F24F11/83; F24F11/84; F24F11/86; F24F11/88; G05D; G05D23/00; G05D23/19; G05D23/1917; G05D23/20; F24F11/30; F24F2110/00; F24F2110/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2712414A
Cited
US2932471A
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US3174298A
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US3034718A
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US3122722A
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US3265873A
Cited
US3324458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |