CA334492A - Mecanisme a faire le vide - Google Patents

Mecanisme a faire le vide

Info

Publication number
CA334492A
CA334492A CA334492A CA334492DA CA334492A CA 334492 A CA334492 A CA 334492A CA 334492 A CA334492 A CA 334492A CA 334492D A CA334492D A CA 334492DA CA 334492 A CA334492 A CA 334492A
Authority
CA
Canada
Prior art keywords
exhausting mechanism
exhausting
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
CA334492A
Other languages
English (en)
Inventor
David N. Crosthwait, Jr.
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.)
C A DUNHAM Co
Original Assignee
C A DUNHAM Co
Publication date
Application granted granted Critical
Publication of CA334492A publication Critical patent/CA334492A/fr
Expired legal-status Critical Current

Links

CA334492A Mecanisme a faire le vide Expired CA334492A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA334492T

Publications (1)

Publication Number Publication Date
CA334492A true CA334492A (fr) 1933-08-01

Family

ID=35297633

Family Applications (1)

Application Number Title Priority Date Filing Date
CA334492A Expired CA334492A (fr) Mecanisme a faire le vide

Country Status (1)

Country Link
CA (1) CA334492A (fr)

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