Patents for inventions.
Abridgements of specifications.
Class 40,
electric telegraphs and telephones.

APA Citation

Great Britain. Patent Office. Patents for inventions. London: Printed for H.M. Stationery Off.

MLA Citation

Great Britain. Patent Office. Patents for Inventions. London: Printed for H.M. Stationery Off,

Warning: These citations may not always be complete (especially for serials).