Specification of Samuel Barton
Subtitle: face shield for respiring in noxious atmospheres
Publisher: Great Seal Patent Office
Published: 1873
Place of publication: London
Language: eng
Subjects: Respiratory Protective Devices
Notes: At head of title: A.D. 1873, 10th August. No. 2393.

"Samuel Barton, of Cannon Street, in the city of London."