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US Patent: 407,842
Tool-driver
Patentee:
Anton Schuermann (exact or similar names) - Decatur, IL

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
None

Manufacturer:
H. Mueller Mfg. Co. - Decatur, IL

Witnesses:
L. P. Graham
I. D. Walker

Patent Dates:
Applied: Apr. 29, 1889
Granted: Jul. 30, 1889

Patent Pictures: [ 1 | 2 | 3 | 4 ]
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Description:
Information taken from Clifford D. Fales' database.

Sample does resemble patent illustration but commonly seen models do not resemble the patent illustration.

Marked, "H. Mueller Mfg. Co. / Decatur, Ill. / PAT. JULY 30, 1889"; sometimes: "COMPLIMENTS OF H. MUELLER MFG. CO. / DECATUR, ILL. U.S.A. / (REGISTERED TRADE MARK) MAKERS OF GOOD / WATER, GAS & PLUMBER / SUPPLIES"

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