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US Patent: 909,748
Automatic Die Head
Patentees:
Frederick L. Brown (exact or similar names) - Scottdale, Westmoreland County, PA
Isaac William Sprink (exact or similar names) - Scottdale, Westmoreland County, PA

USPTO Classifications:
408/142, 408/74, 470/75

Tool Categories:
metalworking tools : tap and die holders

Assignees:
Crescent Mfg. Co. - Scottdale, Westmoreland County, PA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 26, 1907
Granted: Jan. 12, 1909

Patent Pictures:
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