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US Patent: 1,850,690
Retaining device for plate valves
Patentee:
Snowden B. Redfield (exact or similar names) - Easton, PA

USPTO Classifications:
137/454.4, 137/601.13, 251/61.2, 417/446, 417/454, 92/94

Tool Categories:
industrial machines : pneumatic : air compressors

Assignees:
Ingersoll-Rand Co. - Jersey City, NJ

Manufacturer:
Ingersoll-Rand Co. - Jersey City, NJ

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 01, 1928
Granted: Mar. 22, 1932

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Ingersoll-Rand Co.

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