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WM HEINA Patents
#1

Found these . WM Heina was involved with early Transitone sets.


Attached Files
.pdf US-1829219-A_I.pdf Size: 188.02 KB  Downloads: 206
.pdf US-1802345-A_I.pdf Size: 490.6 KB  Downloads: 213
.pdf US-1809296-A_I.pdf Size: 272.39 KB  Downloads: 220
#2

More Transitone/Philco patents


Attached Files
.pdf US-2065651-A_I.pdf Size: 239.48 KB  Downloads: 183
.pdf US-1904149-A_I.pdf Size: 646.42 KB  Downloads: 189




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