Owatonna Tool Co. marks

Undated

Grip-O-Matic

First recorded use: 01/01/1940; Filed: 03/30/1964; Issued: 06/01/1965

Undated

OTC [logo]

First recorded use: 02/20/1944; Filed: 02/18/1964; Issued: 04/13/1965

Undated

OTC [logo]

First recorded use: 02/20/1944; Filed: 08/31/1972; Issued: 05/28/1974

Undated

OTC [logo]

First recorded use: 09/01/1925; Filed: 08/15/1927; Issued: 01/17/1928

Stylized text, used for gear pullers, other tools

Undated

Push-Puller

First recorded use: 01/01/1940; Filed: 03/30/1964; Issued: 11/03/1964