The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1980
Filed:
Jul. 30, 1979
Applicant:
Inventor:
Warren D Knowles, Clark, NJ (US);
Assignee:
The Singer Company, Stamford, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112240 ;
Abstract
A sewing machine presser device is provided with a sole plate and with a latching spring which can be snapped into a retaining notch at the rear edge of a shank on the device and easily removed therefrom with only slight pressure applied to the toe end portion of the plate.
Knowles, Warren. (1980). Readily attachable and detachable sole plate for a sewing machine (U.S. Patent No. 4213411). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4213411
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile