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US Patent: 1,088,175
Slide Rule
Patentee:
William O. Phillips (exact or similar names) - Riverside, Cook County, IL

USPTO Classifications:
235/70R, 33/809

Tool Categories:
rules : slide rules

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 21, 1912
Granted: Feb. 24, 1914

Patent Pictures:
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