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US Patent: 74,750
Improvement in pistons
Patentees:
Isaac Y. Chubbuck - Roxbury, MA
S. E. Chubbuck - Roxbury, MA

USPTO Classifications:
277/483, 277/487

Tool Categories:
propulsion and energy : steam engines : steam engine pistons

Assignees:
S. E. Chubbuck, Jr. - Roxbury, MA
Isaac Y. Chubbuck - Roxbury, MA
S. E. Chubbuck - Roxbury, MA

Manufacturer:
S. E. Chubbuck & Sons - Roxbury, MA

Witnesses:
D. N. B. Coffin, Jr.
Irah D. Spaulding

Patent Dates:
Granted: Feb. 25, 1868

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for S. E. Chubbuck & Sons

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