CA317691A - Vacuum tube - Google Patents

Vacuum tube

Info

Publication number
CA317691A
CA317691A CA317691A CA317691DA CA317691A CA 317691 A CA317691 A CA 317691A CA 317691 A CA317691 A CA 317691A CA 317691D A CA317691D A CA 317691DA CA 317691 A CA317691 A CA 317691A
Authority
CA
Canada
Prior art keywords
vacuum tube
vacuum
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
CA317691A
Other languages
French (fr)
Inventor
Collett Lafern
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.)
CARDON-PHONOGRAPH Corp
Sparks Withington Co
Original Assignee
CARDON-PHONOGRAPH Corp
Sparks Withington Co
Publication date
Application granted granted Critical
Publication of CA317691A publication Critical patent/CA317691A/en
Expired legal-status Critical Current

Links

CA317691A Vacuum tube Expired CA317691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA317691T

Publications (1)

Publication Number Publication Date
CA317691A true CA317691A (en) 1931-12-01

Family

ID=35278247

Family Applications (1)

Application Number Title Priority Date Filing Date
CA317691A Expired CA317691A (en) Vacuum tube

Country Status (1)

Country Link
CA (1) CA317691A (en)

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