U.S. Patent 174465 (Improvement in Telegraphy)

E44557

United States patent telecommunications patent

U.S. Patent 174465 (Improvement in Telegraphy) is Alexander Graham Bell’s landmark patent that laid the legal and technical foundation for the invention and development of the telephone.

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Observed surface forms (2)

Surface form	Occurrences
U.S. Patent 174465	0
Improvement in Telegraphy	1

Statements (47)

Predicate	Object
instanceOf	United States patent ⓘ telecommunications patent ⓘ
assignee	Alexander Graham Bell ⓘ
associatedOrganization	AT&T ⓘ Bell Telephone Company ⓘ surface form: American Bell Telephone Company Bell Telephone Company ⓘ
associatedPerson	Alexander Graham Bell ⓘ
associatedWithInvention	electrical transmission of articulate speech ⓘ invention of the telephone ⓘ
category	19th-century patent ⓘ telecommunications law precedent ⓘ
citedAs	Bell’s basic telephone patent ⓘ
claims	apparatus for producing electrical undulations corresponding to sound vibrations ⓘ method of transmitting vocal sounds telegraphically by causing electrical undulations similar in form to the vibrations of the air accompanying the said vocal sounds ⓘ use of variable resistance to create electrical undulations for sound transmission ⓘ
country	United States of America ⓘ surface form: United States
describes	receiver for converting electrical undulations back into audible sound ⓘ transmitter for converting sound vibrations into electrical signals ⓘ use of a diaphragm in contact with an electrical circuit element ⓘ use of undulatory (continuous) currents instead of intermittent currents for sound transmission ⓘ
enables	practical long-distance voice communication over wires ⓘ
field	telegraphy ⓘ telephony ⓘ
historicalSignificance	considered one of the most valuable patents in history ⓘ laid legal and technical foundation for commercial telephony ⓘ
impact	established priority for Bell in the invention of the telephone in U.S. law ⓘ formed basis for extensive patent infringement suits in the telephone industry ⓘ
influenced	development of commercial telephone networks ⓘ subsequent telephone transmitter and receiver designs ⓘ
inventionType	improvement in telegraph systems to carry complex sounds ⓘ
inventor	Alexander Graham Bell ⓘ
jurisdiction	United States Patent and Trademark Office ⓘ surface form: United States Patent Office
language	English ⓘ
legalSignificance	foundational patent for the telephone ⓘ key patent in early telephone litigation ⓘ
patentNumber	174,465 ⓘ
relatedConcept	analog signal transmission ⓘ harmonic telegraphy ⓘ variable resistance transmitter ⓘ
relatesTo	harmonic telegraph ⓘ telephone ⓘ transmission of vocal or other sounds telegraphically ⓘ
subjectMatter	electrical undulations corresponding to sound vibrations ⓘ simultaneous transmission of multiple signals over a single wire ⓘ
technologyDomain	electrical communication ⓘ voice transmission ⓘ
title	U.S. Patent 174465 (Improvement in Telegraphy) self-linksurface differs ⓘ surface form: Improvement in Telegraphy

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Alexander Graham Bell → notableWork → U.S. Patent 174465 (Improvement in Telegraphy) ⓘ

U.S. Patent 174465 (Improvement in Telegraphy) → title → U.S. Patent 174465 (Improvement in Telegraphy) self-linksurface differs ⓘ

subject surface form: U.S. Patent 174465

this entity surface form: Improvement in Telegraphy