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US Patent: 1,657,086
External Pipe Thread Cleaner and Chaser
Patentee:
Hans K. Hyrup (exact or similar names) - Los Angeles, Los Angeles County, CA

USPTO Classifications:
470/20915

Tool Categories:
specialty tools : pipe and orifice cleaners

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 02, 1925
Granted: Jan. 24, 1928

Patent Pictures:
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