Improvements in ophthalmoscopic and laryngoscopic lamps
By: [William Avery]
Contributors: Burrell, Abrham; Marks & Clerk
Publisher: Printed for His Majesty's Stationery Office by Malcomson & Co., Ltd
Place of publication: Redhill
Language: eng
Notes: Patent specification.

Contains the complete specification.

Patent reference : 1900/20651.