CA799844A - Pneumatic tube signal system - Google Patents

Pneumatic tube signal system

Info

Publication number
CA799844A
CA799844A CA799844A CA799844DA CA799844A CA 799844 A CA799844 A CA 799844A CA 799844 A CA799844 A CA 799844A CA 799844D A CA799844D A CA 799844DA CA 799844 A CA799844 A CA 799844A
Authority
CA
Canada
Prior art keywords
signal system
pneumatic tube
tube signal
pneumatic
tube
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
CA799844A
Inventor
H. Thorburn David
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.)
Powers Regulator Co
Original Assignee
Powers Regulator Co
Publication date
Application granted granted Critical
Publication of CA799844A publication Critical patent/CA799844A/en
Expired legal-status Critical Current

Links

CA799844A Pneumatic tube signal system Expired CA799844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA799844T

Publications (1)

Publication Number Publication Date
CA799844A true CA799844A (en) 1968-11-26

Family

ID=36267858

Family Applications (1)

Application Number Title Priority Date Filing Date
CA799844A Expired CA799844A (en) Pneumatic tube signal system

Country Status (1)

Country Link
CA (1) CA799844A (en)

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