Patent US3114901A successfully refreshed from Google Patents.
US3114901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire alarm system
Assignee: Individual
•
Filing: 1958-03-26
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Granted: 1963-12-17
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Expires: 1978-03-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Capelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:29
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06; G08B25/00; G08B25/01; G08B25/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A FIRE DETECTION AND ALARM SYSTEM FOR USE IN CONVENTIONAL ELECTRIC DISTRIBUTION SYSTEMS COMPRISING AT LEAST ONE NORMALLY OPEN FIRE DETECTOR SWITCH, MEANS CARRIED BY SAID SWITCH FOR SELECTIVELY CLOSING AND OPENING SAID SWITCH IN RESPONSE TO AN INCREASING TEMPERATURE, A STEP RELAY, SAID RELAY BEING SELECTIVELY CONTROLLED BY SAID SWITCH, ALARM MEANS, SAID ALARM MEANS CONTROLLED BY SAID SWITCH AND BEING ACTUATED UPON THE COMPLETION OF A PREDETERMINED NUMBER OF STEPS OF SAID RELAY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |