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:
Mar. 19, 1985
Filed:
Jun. 21, 1982
Applicant:
Inventor:
John C Lockwood, Atlanta, GA (US);
Assignee:
Scripto, Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K / ; B43K / ;
U.S. Cl.
CPC ...
401 55 ; 401 68 ; 401 75 ; 401 76 ; 401 79 ; 401 87 ; 401 72 ;
Abstract
A screw feed mechanical pencil having a propelling nut which self-taps on an unthreaded interior barrel wall. The pencil's barrel and split tube are plastic extrusions and a square lead is used to prevent lead rotation during writing.
Lockwood, John. (1985). Mechanical pencil with self-tapping propelling nut and the method of (U.S. Patent No. 4505606). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4505606
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile