US3553664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring apparatus
Assignee: Monsanto Co
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Filing: 1968-07-15
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Granted: 1971-01-05
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Expires: 1988-07-15
Abstract
Abstract AN APPARATUS FOR MONITORING THE DURATION OF PULSES OF VARIABLE VOLTAGE DERIVED FROM A SYSTEM USED FOR THE DETECTION AND SUPPRESSION OF EXPLOSIONS IN CLOSED VESSELS COMPRISING A SOURCE OF ENERGY AND A DETECTOR RESPONSIVE THERETO, A MEANS FOR ACTIVATING SAID SOUCE OF ENERGY AND GENERATING A REFERENCE PULSE, A VOLTAGE DISCRINATOR FOR DETECTING THE LEVEL OF VOLTAGE DERIVED FROM SAID DETECTOR AND FOR GENERATING A SIGNAL PULSE, LOGIC CIRCUITRY FOR COMPARING THE DURATION OF SAID REFERENCE PULSE WITH SAID SIG- NAL PULSE AND A UTILIZATION MEANS RESPONSIVE TO THE OUTPUT FROM SAID LOGIC CIRCUITRY.
Inventors
- 👤 Huel C Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:30
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/26; G; G08; G08B; G08B17/00; G08B17/10; G08B17/103; G08B17/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |