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US Patent: 384,971
Spring Dividers
Patentee:
James F. Guthrie, Jr. - Somerville, MA

USPTO Classifications:
33/558.07

Tool Categories:
layout tools : compasses : dividers

Assignees:
James F. Guthrie, Jr. - Somerville, MA
Thomas C. Ashley - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
Edward S. Beach
John R. Snow

Patent Dates:
Applied: Mar. 08, 1888
Granted: Jun. 26, 1888

Patent Pictures:
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