US3413561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process controller including an operational amplifier
Assignee: Honeywell Inc
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Filing: 1964-10-22
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Granted: 1968-11-26
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Expires: 1984-10-22
Abstract
No abstract record available.
Inventors
- 👤 James A Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:34
CPC Classifications
G; G05; G05B; G05B6/00; G05B6/02; G05B11/00; G05B11/01; G05B11/36; G05B11/38; G06; G06G; G06G7/00; G06G7/48; G06G7/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |