Specification of Edward Collier
Subtitle: ear dilators
Publisher: Great Seal Patent Office
Published: 1856
Place of publication: London
Language: eng
Subjects: Hearing Aids
Description: Patent for a device (which "consists of a piece of silver tube with a funnel mouth") intended to improve poor hearing.
Notes: Cover title.

At head of title: A.D. 1859, 20th September. No. 2145.

"Edward Collier, of Myddleton Street, Clerkenwell, in the county of Middlesex, surgical instrument maker".