CA277770A - Wave signalling system - Google Patents

Wave signalling system

Info

Publication number
CA277770A
CA277770A CA277770A CA277770DA CA277770A CA 277770 A CA277770 A CA 277770A CA 277770 A CA277770 A CA 277770A CA 277770D A CA277770D A CA 277770DA CA 277770 A CA277770 A CA 277770A
Authority
CA
Canada
Prior art keywords
signalling system
wave signalling
wave
signalling
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
CA277770A
Other languages
French (fr)
Inventor
S. Black Harold
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA277770A publication Critical patent/CA277770A/en
Expired legal-status Critical Current

Links

CA277770A Wave signalling system Expired CA277770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA277770T

Publications (1)

Publication Number Publication Date
CA277770A true CA277770A (en) 1928-02-07

Family

ID=35210861

Family Applications (1)

Application Number Title Priority Date Filing Date
CA277770A Expired CA277770A (en) Wave signalling system

Country Status (1)

Country Link
CA (1) CA277770A (en)

Similar Documents

Publication Publication Date Title
CA278177A (en) Wave signalling system
CA277770A (en) Wave signalling system
CA285720A (en) Wave signaling system
CA280405A (en) Electric wave signalling system
CA277425A (en) Signalling system
CA278989A (en) Signalling system
CA283041A (en) Signalling system
CA285739A (en) Signalling system
CA282374A (en) Signaling system
AU1587728A (en) Wave singalling system
AU1630828A (en) Signalling system
CA286505A (en) Wave signaling system
CA297623A (en) Wave signalling system
CA304244A (en) Wave signalling system
CA263211A (en) Wave signalling system
CA277769A (en) Radio signalling system
CA281071A (en) Shop-easy system
CA285332A (en) High frequency duplex signalling system
CA280740A (en) Selective signalling system
CA276758A (en) Alarm system
AU2080129A (en) Wave signaling system
CA284342A (en) Block system
CA279462A (en) Inverted system
CA282236A (en) Signal system
CA285346A (en) Electric signalling system