CA3879A - Automatic signal boxes for electro-magnetic fire alarm telegraph - Google Patents

Automatic signal boxes for electro-magnetic fire alarm telegraph

Info

Publication number
CA3879A
CA3879A CA000003879A CA3879DA CA3879A CA 3879 A CA3879 A CA 3879A CA 000003879 A CA000003879 A CA 000003879A CA 3879D A CA3879D A CA 3879DA CA 3879 A CA3879 A CA 3879A
Authority
CA
Canada
Prior art keywords
electro
fire alarm
automatic signal
signal boxes
magnetic fire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000003879A
Other languages
French (fr)
Inventor
Moses G. Crane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA3879A publication Critical patent/CA3879A/en
Expired legal-status Critical Current

Links

CA000003879A Automatic signal boxes for electro-magnetic fire alarm telegraph Expired CA3879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA3879T

Publications (1)

Publication Number Publication Date
CA3879A true CA3879A (en) 1874-09-30

Family

ID=45120440

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000003879A Expired CA3879A (en) Automatic signal boxes for electro-magnetic fire alarm telegraph

Country Status (1)

Country Link
CA (1) CA3879A (en)

Similar Documents

Publication Publication Date Title
CA3570A (en) Automatic car-coupling
CA3667A (en) Signal lantern
CA3840A (en) Locomotive fire box
CA4132A (en) Automatic fire extinguisher
CA3952A (en) Railway signal apparatus
CA3714A (en) Improvements on metallic or other boxes
CA3311A (en) Car-coupling
CA3537A (en) Car-coupling
CA4029A (en) Car-coupling
CA2991A (en) Car-coupling
CA3553A (en) Car-coupling
CA3962A (en) Car-coupling
CA3811A (en) Car-coupling
CA3731A (en) Car-coupling
CA3006A (en) Automatic kaleidoscope
CA4009A (en) Car-coupler
CA3251A (en) Signal hand lantern
CA3216A (en) Fire escape
CA3586A (en) Improvements on capstans
CA3240A (en) Improvements on plough mould boards
CA3734A (en) Electric railway signals
CA3322A (en) Fire grate
CA3973A (en) Stove-pipe coupler
CA3013A (en) Machinery for operating semaphore signals
CA3195A (en) Fire extinguisher