CA12617A - Improvements on duplex telegraphs - Google Patents

Improvements on duplex telegraphs

Info

Publication number
CA12617A
CA12617A CA000012617A CA12617DA CA12617A CA 12617 A CA12617 A CA 12617A CA 000012617 A CA000012617 A CA 000012617A CA 12617D A CA12617D A CA 12617DA CA 12617 A CA12617 A CA 12617A
Authority
CA
Canada
Prior art keywords
telegraphs
duplex
duplex telegraphs
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
CA000012617A
Other languages
French (fr)
Inventor
Gerritt Smith
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 CA12617A publication Critical patent/CA12617A/en
Expired legal-status Critical Current

Links

CA000012617A Improvements on duplex telegraphs Expired CA12617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA12617T

Publications (1)

Publication Number Publication Date
CA12617A true CA12617A (en) 1881-04-11

Family

ID=45129162

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000012617A Expired CA12617A (en) Improvements on duplex telegraphs

Country Status (1)

Country Link
CA (1) CA12617A (en)

Similar Documents

Publication Publication Date Title
CA12617A (en) Improvements on duplex telegraphs
CA13577A (en) Improvements on telegraphs
CA12574A (en) Improvements on telegraphy
CA12832A (en) Improvements on telegraphy
CA13198A (en) Improvements on printing telegraphs
CA12358A (en) Improvements on telegraph keys
CA12603A (en) Improvements on say sets
CA12665A (en) Telegraph cable
CA12214A (en) Improvements on dynamo-electric telegraphy
CA12343A (en) Improvements on telephones
CA12392A (en) Improvements on telephones
CA12725A (en) Improvements on telephones
CA13049A (en) Improvements on telephones
CA13586A (en) Improvements on telephones
CA13606A (en) Improvements on telephones
CA13636A (en) Improvements on telephones
CA12971A (en) Improvements on carburetters
CA13764A (en) Improvements on scale-carts
CA12272A (en) Improvements on blanket-holders
CA12244A (en) Improvements on buckboards
CA13208A (en) Improvements on veber-meters
CA13341A (en) Improvements on stigmographs
CA13517A (en) Improvements on spottoons
CA13573A (en) Improvements on piamofortes
CA13625A (en) Improvements on cigar-holders