Name: | Van Valkenburg, L. D.; Holyoke, Massachusetts (USA) |
Abbreviation: | van-valken |
Products: | Model types |
Summary: |
In the November 1925 edition of The Radio Trade Directory on page 120, under the listing for manufacturers of crystal sets, the L.D. Van Valkenburg Company was located in Holyoke, Massachusetts . |
History: |
Fixed Detectors.
|
Country | Year | Name | 1st Tube | Notes |
---|---|---|---|---|
USA | 25 | Van Fixed | Fixed Detector. |