Apparatus for magnifying the images on television screens
United States Patent 2449886
US Patent References:
/0443359.html
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/0661688.html
- - 0661688
/0852656.html
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/1074316.html
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/1112736.html
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/0443359.html
- - 0443359
/0661688.html
- - 0661688
/0852656.html
- - 0852656
/1074316.html
- - 1074316
/1112736.html
- - 1112736
Inventors:
Dougherty, John S.
Publication Date:
09/21/1948
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Assignee:
Dougherty, John S.
Primary Class:
Other Classes:
359/813, 359/665, 348/832, D16/135
International Classes:
G02B3/12; G03B21/60; H01J29/89