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US Patent: 4,926,557
Semi-automatic string trimmer head
Patentee:
Eugene J. Haupt (exact or similar names) - Woodland Hills, CA

USPTO Classifications:
30/276, 30/347

Tool Categories:

Assignees:
Allegretti & Co. - Chatsworth, CA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 21, 1988
Granted: May 22, 1990

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Paramount Division of Allegretti & Co.

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