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US Patent: D20,017
Design for a Hammer
Patentee:
Duncan L. Melvin - North Brookfield, MA

USPTO Classifications:
7/147, D8/78

Tool Categories:
woodworking tools : hammers
trade specific : bricklayer

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Timothy Howard
L. Emerson Barnes

Patent Dates:
Applied: Jun. 18, 1890
Granted: Jul. 15, 1890

Patent Pictures:
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Description:
Parallelopipedon shaped hammer for bricklayers. Patent term is 14 years.

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