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US Patent: 909,183
Vacuum Pump
Patentee:
Charles L. Heisler (exact or similar names) - St. Mary's, Auglaize County, OH

USPTO Classifications:
417/501, 417/555.1

Tool Categories:
industrial machines : pumps : vacuum pumps

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 23, 1907
Granted: Jan. 12, 1909

Patent Pictures:
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