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San Francisco in San Francisco City and County, California — The American West (Pacific Coastal)
 

Farnsworth's Green Street Lab

 
 
Farnsworth's Green Street Lab Marker image. Click for full size.
By Walter Barnes, April 25, 2009
1. Farnsworth's Green Street Lab Marker
Inscription. In a simple laboratory on this site, 202 Green Street, Philo Taylor Farnsworth, U.S. pioneer in electronics,invented and patented the first operational all-electronic "television system" on September 7, 1927. The 21 year-old inventor and several dedicated assistants successfully transmitted the first all-electronic television image, the major breakthrough that brought the practical form of this invention to mankind. Further patents formulated here covered the basic concepts essential to modern television. The genius of Green Street, as he was known, died in 1971.


California Historical Landmark No. 941.
Plaque placed by the State Department of Parks
and Recreation in cooperation with the Philo T.
Farnsworth Foundation, Inc. September 15, 1981

 
Erected 1981 by State Department of Parks and Recreation in cooperation with the Philo T. Farnsworth Foundation. (Marker Number 941.)
 
Location. 37° 48.019′ N, 122° 24.186′ W. Marker is in San Francisco, California, in San Francisco City and County. Marker is on Green Street. near Sansome Street, on the right when traveling west. Click for map. Marker is at or near this postal address: 202 Green Street, San Francisco CA 94111, United States of America.
 
Other nearby markers.
Farnsworth's Green Street Lab and Marker image. Click for full size.
March 9, 2013
2. Farnsworth's Green Street Lab and Marker
The marker is visible here, mounted to a monument, on the corner. The Farnsworth lab building is directly behind it.
At least 8 other markers are within walking distance of this marker. Telegraph Hill Historic District (about 400 feet away, measured in a direct line); Ship Brooklyn (approx. 0.2 miles away); Clark’s Point (approx. 0.2 miles away); Buried Ships (approx. 0.2 miles away); Those Who Harvest the Sea (approx. 0.2 miles away); Coit Tower (approx. 0.2 miles away); Lupo’s Restaurant (approx. 0.2 miles away); White Angel (approx. 0.2 miles away). Click for a list of all markers in San Francisco.
 
Regarding Farnsworth's Green Street Lab. This site was designated as California Registered Historical Landmark No.971 on February 19, 1971.
 
Related markers. Click here for a list of markers that are related to this marker. The list includes other historical markers about Philo T. Farnsworth in Indiana and Utah.
 
Also see . . .
1. Philo Farnsworth. “On September 7, 1927, in his lab at the bottom of Telegraph Hill, 21-year old Farnsworth’s invention transmitted the blurry image of a line. With his “Lab Gang,” as the researchers called themselves, he perfected the technology, in the next year transmitting shapes, and few years later, sending signals from the lab at 202 Green Street to the Merchants’ Exchange Building on Battery and Washington – 8 blocks away.” (Submitted on July 17, 2009.) 

2. The Museum of Broadcast Communication. A biogaphy of Philo Farnsworth (Submitted on July 17, 2009.) 

3. Philo Taylor Farnsworth (1906-1971). (Submitted on July 17, 2009.)
 
Categories. CommunicationsNotable PlacesScience & Medicine
 
 
Credits. This page originally submitted on , by Walter Barnes of San Pablo, California. This page has been viewed 1,300 times since then and 3 times this year. Photos:   1. submitted on , by Walter Barnes of San Pablo, California.   2. submitted on . • Syd Whittle was the editor who published this page. This page was last revised on June 16, 2016.
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