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:
Jan. 12, 1982
Filed:
Mar. 13, 1980
Applicant:
Inventor:
Clinton Davis, Corning, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ;
U.S. Cl.
CPC ...
405283 ; 405284 ;
Abstract
Disclosed herein is a safety trench box for use in protecting workmen from cave-ins while operating within an excavated area. The device includes a barrier which surrounds the work area having a depth substantially that of the trench and an opening along one wall of the barrier that allows work to be sequentially fed therethrough. The safety device includes a pair of runners upon which the device is carried so that advancing the safety device can be easily accomplished.
Davis, Clinton. (1982). Safety trench box (U.S. Patent No. 4310267). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4310267
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile