Patents for inventions.
Abridgements of specifications.
Class 40 (ii),
phonographs, and like sound transmitting and reproducing instruments.
APA Citation
Great Britain. Patent Office. Patents for inventions. London: Printed under the Authority of H.M. Stationery Off. by the Courier Press.
MLA Citation
Great Britain. Patent Office. Patents for Inventions. London: Printed under the Authority of H.M. Stationery Off. by the Courier Press,
Warning: These citations may not always be complete (especially for serials).