CA188449A - Tube a vide - Google Patents

Tube a vide

Info

Publication number
CA188449A
CA188449A CA000188449A CA188449DA CA188449A CA 188449 A CA188449 A CA 188449A CA 000188449 A CA000188449 A CA 000188449A CA 188449D A CA188449D A CA 188449DA CA 188449 A CA188449 A CA 188449A
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
CA000188449A
Other languages
English (en)
Inventor
Raymond A. Heising
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA188449A publication Critical patent/CA188449A/fr
Expired legal-status Critical Current

Links

CA000188449A 1917-12-20 1917-12-20 Tube a vide Expired CA188449A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA188449T 1917-12-20

Publications (1)

Publication Number Publication Date
CA188449A true CA188449A (fr) 1919-01-28

Family

ID=45308100

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000188449A Expired CA188449A (fr) 1917-12-20 1917-12-20 Tube a vide

Country Status (1)

Country Link
CA (1) CA188449A (fr)

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