Drawing attachment for a microscope

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top perspective view of the drawing attachment for a microscope showing my new design; and

FIG. 2 is a bottom perspective view of the drawing attachment.

Referenced Cited
U.S. Patent Documents
D197419 January 1964 Preble, Jr.
2097752 November 1937 Becker
2133321 October 1938 Ehrlich
2185926 January 1940 Senecal
3205770 September 1965 Kock et al.
3572884 March 1971 Chirayath
Patent History
Patent number: D250412
Type: Grant
Filed: Mar 2, 1977
Date of Patent: Nov 28, 1978
Assignee: American Optical Corporation (Southbridge, MA)
Inventor: John T. Armbruster (Niagara Falls, NY)
Primary Examiner: Bernard Ansher
Attorney: Howard R. Berkenstock, Jr.
Application Number: 5/773,725
Classifications
Current U.S. Class: D16/57; Microprojector (353/39); D16/14
International Classification: D1606;