Pumps – Electrical or getter type
Patent
1975-02-12
1976-09-07
Freeh, William L.
Pumps
Electrical or getter type
313174, F04B 3702
Patent
active
039791661
ABSTRACT:
A getter device having two rings with coextensive axes wherein the rings are in thermal contact one with the other.
REFERENCES:
patent: 2824640 (1958-02-01), Porta
patent: 3225911 (1965-12-01), Porta
patent: 3385420 (1968-05-01), Porta
Freeh William L.
Look Edward
S.A.E.S. Getters S.p.A.
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