Ionic vacuum pump
United States Patent 2460175
US Patent References:
Electronic pump
- - 2182751

Electrical vacuum pump
- - 2282401


Inventors:
Hergenrother, Rudolf C.
Publication Date:
01/25/1949
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Assignee:
HAZELTINE RESEARCH INC
Primary Class:
417/49
Other Classes:
313/161, 313/162, 313/15
International Classes:
H01J41/14; H01J41/00