02-24-2008, 11:10 PM
No, the Model 60 had not even been thought of in 1930. The first Model 60 sets came out in July 1933, as shown on my website.
Patent numbers shown on those Philco patent labels can predate the actual manufacture of the radio by years; sometimes a patent could be several years older than the radio itself. For example, Edwin Howard Armstrong invented the superheterodyne circuit during World War I, but it did not come into general use until 1930.
Patent numbers shown on those Philco patent labels can predate the actual manufacture of the radio by years; sometimes a patent could be several years older than the radio itself. For example, Edwin Howard Armstrong invented the superheterodyne circuit during World War I, but it did not come into general use until 1930.
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Ron Ramirez
Ferdinand IN
