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CA Patent: CA-580,911
Shock absorbing mechanism
Patentee: George Haumann (exact or similar names) - Portland, OR USPTO Classifications: Tool Categories: Assignees: Irvington Machine Works Inc. - Portland, OR Manufacturer: Irvington Machine Works, Inc. - Portland, OR Witnesses: Unknown	Patent Dates: Granted: Aug. 04, 1959 Patent Pictures: CIPO Data Espacenet patent Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Irvington Machine Works

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