CA218315A - Vacuum device - Google Patents

Vacuum device

Info

Publication number
CA218315A
CA218315A CA218315A CA218315DA CA218315A CA 218315 A CA218315 A CA 218315A CA 218315 A CA218315 A CA 218315A CA 218315D A CA218315D A CA 218315DA CA 218315 A CA218315 A CA 218315A
Authority
CA
Canada
Prior art keywords
vacuum device
vacuum
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
CA218315A
Other languages
French (fr)
Inventor
L. Bradford James
F. Gowen Robert
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA218315A publication Critical patent/CA218315A/en
Expired legal-status Critical Current

Links

CA218315A Vacuum device Expired CA218315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA218315T

Publications (1)

Publication Number Publication Date
CA218315A true CA218315A (en) 1922-05-09

Family

ID=35112759

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218315A Expired CA218315A (en) Vacuum device

Country Status (1)

Country Link
CA (1) CA218315A (en)

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