Specification of William Brockedon
Subtitle: shaping pills, lozenges, and black lead by pressure in dies
Publisher: Great Seal Patent Office
Published: 1856
Place of publication: London
Language: eng
Subjects: Machinery; Graphite
Notes: At head of title: A.D. 1843. No. 9977.

"William Brockedon, of Devonshire Street, Queen Square, in the county of Middlesex, gentleman."