From 1970 trademark registration

Grinding & Polishing Machinery Corp., also known as G & P Machinery was in business by 1955 and made abrasive machinery, including an abrasive belt grinder. They were a small and fairly low-profile operation but they were still in business in the early 2000s.

Address between 1955 and the mid-1960s: 2530 Winthrop, Indianapolis 5, Indiana. After that time: 2802 Tobey Drive, Indianapolis, IN 46219.

Information Sources

• 1940 Indianapolis Industrial Directory: "Precision Machine Co. / J. D. Oakley / 2530 Winthrop Ave., Wa. 7371 / Screw machine products".
• 1955 New and Expanding Industries of Indiana: "Special polishing machines and equipment / Grinding and Polishing Machinery Corp. / 2530 Winthrop Avenue / Indianapolis, Indiana 42605".
• 1960 United States Armed Forces Supply Support Center's Metalworking Machinery volume 2 gives a startlingly long list of products made by Grinding & Polishing Machinery Corp.
• June 1961 Popular Mechanics: description and photograph of Grinding & Polishing Machinery Corp.'s "medium-duty belt grinder", powered with 3 or 5 HP motor.
• 1968 New and Expanding Industries, p. 85: "Special polishing machines and equipment / Grinding and Polishing Machinery Corp. / 2530 Winthrop Avenue Indianapolis , Indiana 46205".
• 1969 Arizona Annual Report, Pest Control lists "Federal Chemical Company, Inc., 2530 Winthrop Ave., Indianapolis, IN". Presumably G & P had moved to Tobey Drive by this time.
• 1974 Woodworking & Furniture Digest (volume 76, p. 102) has an ad for Grinding & Polishing Machinery Corp. / 2802 Tobey Dr., Indianapolis, Ind. 46219".
• 1977 Index of Trademarks Issued lists trademark 889,022, U. S. Class 23, to Grinding & Polishing Machinery Corp., Indianapolis, Ind., as canceled. This mark was registered 1970-04-07 to Grinding & Polishing Machinery Corp. / 2530 Winthrop Ave. / Indianapolis, Ind. 46205" for a mark reading "G & P Machinery" with a horizontal line between "G & P" and "Machinery" and all contained in a rectangle with rounded corners. This mark was for "spindle stands with oscillating spindles for mounting grinders, belt adapters for grinding machines, swing-frame polishing units, custom built machines for deburring, finishing and polishing, abrasive belt grinders, abrasive swingframe grinders, and clicker die sharpeners, in Class 23." First use 1966-02-01.
• 1983 patent # 4,369,606 was grated for an abrasive head to Ralph E. Reiman and assigned to Grinding & Polishing Machinery Corp. of Indianapolis.
• 2003 Thomas Register of American Manufacturers lists, under Indianapolis, "Grinding & Polishing Machinery Corp., 2801 Tobey Dr."