Original vintage ophthalmic industry magazine trade ad for THE BRAUN COPROATION of Los Angeles, CA. Selenium Cells can be used for light telephony and kindred subjects. Braun-Knecht-Heimann Company. Old 1922 optical industry laboratory equipment and testing apparatus advertisement.
braun corporation 1922 selenium cells telephony kindred vintage ad
- Product Code: s221
- Length: 9 inches
- Width: 6 inches
- Pages: 1
- Views: 61
- Availability: In Stock
- $20.00
$15.00
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Original vintage ophthalmic industry magazine trade ad for T..
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