CA309730A - Lampe a vide - Google Patents

Lampe a vide

Info

Publication number
CA309730A
CA309730A CA309730A CA309730DA CA309730A CA 309730 A CA309730 A CA 309730A CA 309730 A CA309730 A CA 309730A CA 309730D A CA309730D A CA 309730DA CA 309730 A CA309730 A CA 309730A
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
CA309730A
Other languages
English (en)
Inventor
Bruno Jonas Gottfried
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Publication date
Application granted granted Critical
Publication of CA309730A publication Critical patent/CA309730A/fr
Expired legal-status Critical Current

Links

CA309730A Lampe a vide Expired CA309730A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA309730T

Publications (1)

Publication Number Publication Date
CA309730A true CA309730A (fr) 1931-03-24

Family

ID=35269053

Family Applications (1)

Application Number Title Priority Date Filing Date
CA309730A Expired CA309730A (fr) Lampe a vide

Country Status (1)

Country Link
CA (1) CA309730A (fr)

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