US3307166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annunciator system
Assignee: Individual
•
Filing: 1964-09-08
•
Granted: 1967-02-28
•
Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Charles B Slack
- 👤 Nels E Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:28
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN AN ANNUNCIATOR SYSTEM HAVING AN ABNORMAL CONDITION SENSOR INPUT, A CLOCK PULSE GENERATOR AND ALARM INDICATION MEANS, MEANS FOR PREVENTING OPERATION OF SAID ALARM SYSTEM RESPONSIVE TO A TRANSIENT SIGNAL, SAID MEANS INCLUDING FIRST MEANS RESPONSIVE TO A SIMULTANEOUS CLOCK PULSE FROM SAID CLOCK PULSE GENERATOR AND AN ABNORMAL CONDITION INDICATION AT SAID ABNORMAL CONDITION SENSOR INPUT TO PROVIDE A FIRST FAULT INDICATION, SECOND MEANS RESPONSIVE TO THE SIMULTANEOUS APPLICATION THERETO OF EACH OF (1) THE NEXT SUCCEEDING CLOCK PULSE FROM SAID CLOCK
Claim 2
Dependent Claim
84 words
IN AN ANNUNCIATOR SYSTEM HAVING AN ABNORMAL CONDITION SENSOR INPUT, A CLOCK PULSE GENERATOR AND ALARM INDICATION MEANS, MEANS FOR PREVENTING OPERATION OF SAID ALARM SYSTEM RESPONSIVE TO A TRANSIENT SIGNAL, SAID MEANS INCLUDING FIRST MEANS RESPONSIVE TO A SIMULTANEOUS CLOCK PULSE FROM SAID CLOCK PULSE GENERATOR AND AN ABNORMAL CONDITION INDICATION AT SAID ABNORMAL CONDITION SENSOR INPUT TO PROVIDE A FIRST FAULT INDICATION, SECOND MEANS RESPONSIVE TO THE SIMULTANEOUS APPLICATION THERETO OF EACH OF (1) THE NEXT SUCCEEDING CLOCK PULSE FROM SAID CLOCK
References Cited (Backward Citations)
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Cited
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Cited
FR1238411A
Cited
US3110866A
Cited
US3202976A
Cited
US3155950A
Cited
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Cited
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Cited
US3170075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |