[GreenKeys] References for RTTY history article

[jhhaynes at earthlink.net]

Patents - you can go to www.uspto.gov, click on search under patents,
click on patent number search, and bring up the patent to read or 
download.  Your browser must have a TIFF viewer plugin.  If you are
using Windows the web site tells you where to find a free one.

1,485,212	Brady
1,523,377	Brady
1,562,820	Brady
1,563,958	Brady
RE 16,485	Brady
1,705,211	Schmitt
2,012,407	Schmitt
1,622,297	Vernam
2,207,620	Hilferty
2,273,776	Zurek
2,299,937	Sprague
2,335,278	Hilferty
2,378,344	Sprague
2,378,373	Sprague
2,387,098	Sprague & Fraim
2,398,054	Sprague
2,421,054	Sprague
2,443,434	Sprague
2,446,077	Crosby
2,451,916	Chapin
2,459,485	Bartlett
2,309,222	Spencer

Articles
Sprague: Frequency-Shift Radiotelegraph and Teletype System, Electronics,
November 1944.

Vanderlippe: Frequency-Shift Radio Teletype in World War II, Bell 
Laboratories Record, December 1947.

Vanderlippe: High-Flying Teletype, Bell Laboratories Record, November 
1946.

Bailey & McCann, Application of Printing Telegraph to Long-Wave
Radio Circuits, Bell system Technical Journal, October 1931.

Davey & Matte, Frequency Shift Telegraphy -- Radio and Wire Applications,
AIEE Transactions, 1947, also in Bell System Technical Journal,
April 1948.

Austin, Long Distance Radio Communication, Journal of the Franklin
Institute, April 1922.

Heising, Printing Telegraph by Radio, Journal of the Franklin Institute,
January 1922.




-- 

jhhaynes at earthlink dot net