Machine for grinding and polishing glass.

Title: 
Machine for grinding and polishing glass.
Author/Artist: 
Gustav Schönholz.
Publisher: 
[London : HMSO], 1925.
Description: 
2 p., [1] folded leaf : ill. ; 27 cm.
Other Authors: 
Great Britain. Patent Office.
Bib ID: 
91450
Notes: 
Stamped "Openbaar gemaakt den 6. Aug. 1925."
Stamped "Bibliotheek Bur. Ind. Eigendom 26 Aug. 1925."
Patent specification.
Patent no. 236,777 accepted July 16, 1925.
Date of application in the U.K.: Oct. 8, 1924, no. 23,830/24.