FR600790A - Two-period vacuum pump device, for deep vacuum - Google Patents

Two-period vacuum pump device, for deep vacuum

Info

Publication number
FR600790A
FR600790A FR600790DA FR600790A FR 600790 A FR600790 A FR 600790A FR 600790D A FR600790D A FR 600790DA FR 600790 A FR600790 A FR 600790A
Authority
FR
France
Prior art keywords
vacuum
pump device
period
deep
vacuum pump
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
Other languages
French (fr)
Inventor
Charles Lumpp
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 filed Critical
Application granted granted Critical
Publication of FR600790A publication Critical patent/FR600790A/en
Expired legal-status Critical Current

Links

FR600790D 1924-10-20 1924-10-20 Two-period vacuum pump device, for deep vacuum Expired FR600790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR600790T 1924-10-20

Publications (1)

Publication Number Publication Date
FR600790A true FR600790A (en) 1926-02-15

Family

ID=8970543

Family Applications (1)

Application Number Title Priority Date Filing Date
FR600790D Expired FR600790A (en) 1924-10-20 1924-10-20 Two-period vacuum pump device, for deep vacuum

Country Status (1)

Country Link
FR (1) FR600790A (en)

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