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US Patent: 4,325,163
Portable blower-vacuum unit
Patentees: Charles A. Mattson (exact or similar names) - Woodland Hills, CA George M. Zink (exact or similar names) - Simi Valley, CA Douglas A. Milliken (exact or similar names) - Thousand Oaks, CA USPTO Classifications: 15/330, 15/337, 15/339, 15/405, 241/169.1, 241/56, 415/121.2, D23/383 Tool Categories: industrial machines : blowers household : vacuum cleaners Assignees: Allegretti & Co. - Chatsworth, CA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 07, 1980 Granted: Apr. 20, 1982 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Paramount Division of Allegretti & Co.

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