De Forest Radio Telephone Company
E186
De Forest Radio Telephone Company was an early 20th-century American firm that developed and commercialized pioneering radio and wireless telephony technologies.
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
company
→
radio manufacturer → telecommunications company → |
| associatedWith |
Lee de Forest
→
audion vacuum tube → |
| basedIn |
United States
→
|
| businessModel |
licensing of radio patents
→
manufacture and sale of radio equipment → |
| commercialized |
pioneering radio technology
→
wireless telephony technology → |
| contributedTo |
development of long-distance wireless telephony
→
early radio broadcasting → |
| country |
United States
→
|
| developed |
radio receivers
→
radio telephone equipment → radio transmitters → vacuum-tube-based radio apparatus → wireless telephony systems → |
| fieldOfWork |
electrical engineering
→
radio engineering → wireless communication → |
| foundedBy |
Lee de Forest
→
|
| hasFounderRole |
Lee de Forest
→
|
| headquartersLocation |
New York City
→
|
| historicalSignificance |
one of the earliest American radio-technology firms
→
|
| inception |
1907
→
|
| industry |
radio
→
telecommunications → wireless telegraphy → wireless telephony → |
| location |
New York City
→
|
| namedAfter |
Lee de Forest
→
|
| notableFor |
commercialization of wireless voice transmission
→
early development of radio telephony → |
| operatedInPeriod |
early 20th century
→
|
| productOrService |
radio broadcasting equipment
→
radio communication equipment → wireless telephone service → |
| status |
defunct
→
|
| timePeriod |
1900s
→
1910s → |
| usedTechnology |
audion vacuum tube
→
|
Referenced by (1)
| Subject (surface form when different) | Predicate |
|---|---|
|
Lee de Forest
→
|
founded |