CA481575A - Control apparatus for forced drainage - Google Patents

Control apparatus for forced drainage

Info

Publication number
CA481575A
CA481575A CA481575A CA481575DA CA481575A CA 481575 A CA481575 A CA 481575A CA 481575 A CA481575 A CA 481575A CA 481575D A CA481575D A CA 481575DA CA 481575 A CA481575 A CA 481575A
Authority
CA
Canada
Prior art keywords
control apparatus
forced drainage
drainage
forced
control
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
CA481575A
Other languages
French (fr)
Inventor
G. Carlson Eric
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 CA481575A publication Critical patent/CA481575A/en
Expired legal-status Critical Current

Links

CA481575A Control apparatus for forced drainage Expired CA481575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA481575T

Publications (1)

Publication Number Publication Date
CA481575A true CA481575A (en) 1952-03-04

Family

ID=35621262

Family Applications (1)

Application Number Title Priority Date Filing Date
CA481575A Expired CA481575A (en) Control apparatus for forced drainage

Country Status (1)

Country Link
CA (1) CA481575A (en)

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