Patent US3099825A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3099825A Expired / Lapsed US ⏱️ 0.0 years remaining

Control units for fire protective signaling systems

Assignee: Individual
•
Filing: 1960-09-30
•
Granted: 1963-07-30
•
Expires: 1980-09-30
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Harriman Cy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 00:16
CPC Classifications
G; G08; G08B; G08B29/00; G08B29/02; G08B29/04; G08B29/06

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 72 words
AN ELECTRICALLY ACTUATED ALARM CIRCUIT COMPRISING A PLURALITY OF ALARM INDICATING MEANS, SAID ALARM INDICATING MEANS BEING NORMALLY CONNECTED IN A SERIES CIRCUIT FOR EASE OF ELECTRICAL SUPERVISION, AND TROUBLE SIGNAL MEANS TO WARN OF A FAULT IN SAID SERIES CIRCUIT, DETECTING MEANS FOR SENSING AN ALARM, AND MEANS RESPONSIVE TO SAID DETECTING MEANS FOR DISCONNECTING SAID SERIES CIRCUIT AND CONNECTING SAID ALARM INDICATING MEANS IN PARALLEL WHEN AN ALARM IS SENSED.
Claim 2
Dependent Claim 72 words
AN ELECTRICALLY ACTUATED ALARM CIRCUIT COMPRISING A PLURALITY OF ALARM INDICATING MEANS, SAID ALARM INDICATING MEANS BEING NORMALLY CONNECTED IN A SERIES CIRCUIT FOR EASE OF ELECTRICAL SUPERVISION, AND TROUBLE SIGNAL MEANS TO WARN OF A FAULT IN SAID SERIES CIRCUIT, DETECTING MEANS FOR SENSING AN ALARM, AND MEANS RESPONSIVE TO SAID DETECTING MEANS FOR DISCONNECTING SAID SERIES CIRCUIT AND CONNECTING SAID ALARM INDICATING MEANS IN PARALLEL WHEN AN ALARM IS SENSED.

References Cited (Backward Citations)

GB340383A Cited
US2651743A Cited
US2887677A Cited
US2931018A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1966-07-29 1967-01-28 1967-07-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-07-29 1971-01-28 1971-07-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-07-29 1975-01-28 1975-07-30 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag