drusen
drusen (macular drusen) (droo-sĕn) pl. n. white or yellow deposits of hyalin in Bruch's membrane of the choroid. They are often associated with macular degeneration.
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cellular telephone
Book article from: The Columbia Encyclopedia, Sixth Edition
...to a conventional telephone network. The geographic region served by a cellular system is subdivided...the other by mobile telephones. To prevent radio...applications in cellular telephones, such as alarm clocks...same time making such telephones vulnerable to certain...inadequate ...
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Mccaw Cellular Communications, Inc.
Book article from: International Directory of Company Histories
...television, but cellular telephone service. This innovation...developed in the 1940s, cellular telephones used a certain portion...over nonstationary telephones. Cellular systems divided a...conventional land telephone lines —...
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telephone
Book article from: The Columbia Encyclopedia, Sixth Edition
...point on the earth. Cellular telephone systems allow small, low...transceivers access to the telephone network; some cellular models provide access to...unrelated applications in telephones, such as alarm clocks...reminders. A camera phone is a cellular phone that has photo taking...
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British Columbia Telephone Company
Book article from: International Directory of Company Histories
British Columbia Telephone Company 3777 Kingsway Burnaby...products. Operationally, telephone operations were reorganized...equipment. In 1985, BC Cellular Limited was formed to introduce and operate cellular telephone service, and...
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Telephone
Book article from: The Oxford Companion to United States History
...x201D; permitted any telephone user to reach any other user...effective distance of the telephone to hundreds of miles, reduced...and expanded the number of telephones that could be connected through...the twentieth century with cellular telephone systems. Telephone production...
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