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:
Apr. 18, 1989
Filed:
Mar. 29, 1988
Applicant:
Inventors:
Jonathan D Sieber, Cambridge, MA (US);
Joseph S Sieber, Cambridge, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461 / ; 3461 / ; 3461 / ; 33 181 ; 401 48 ; 401195 ;
Abstract
A calligraphic writing system includes a plotter of the type having a pen carriage, a pen holder mounted on the carriage, a recording table, and means for moving the pen carriage relative to the table so that a pen mounted on the pen holder draws images on a sheet of paper or other medium mounted on the table. The pen has an asymmetric point. The pen and pen holder include positioning means arranged such that the pen may be mounted in the pen holder only in a predetermined and fixed annular position relative to the pen holder and will be maintained in that position when the images are being drawn.