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:
Feb. 08, 1977
Filed:
Jan. 31, 1975
Applicant:
Inventor:
Brian Matthew Curtis, Scarcliffe, EN;
Assignee:
Perard Engineering Ltd., , EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 43 ; 74422 ; 105 / ;
Abstract
A carriage and drive mechanism for use in mines in which the drive engages a continuous chain and moves the carriage along a rack; including a chain deflecting device and chain guide members.
Quick Actions:
Curtis, Brian. (1977). Carriage especially for use in mines (U.S. Patent No. 4006937). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4006937
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile