Keywords: P Kolbe-14 TEF-equipment 01.jpg Uploaded with en wp UW marker 2013 03 05 Hellmuth Kolbe and Hans Leonhard at the Ratsaal parliament room in Zug Switzerland in ca 1980 with Kolbe ™s early TDS/TEF measuring equipment performing acoustics measurements Sent to me personally 1980 Hans Leonhard Alan lorenzo Hans Leonhard Evidence The license agreement will be forwarded to OTRS shortly Hellmuth Kolbe Hans Leonhard Acoustic measurement Time Delay Spectrometry Time Energy and Frequency TEF measurement Ratsaal Zürich in the 1980s 1980 in Switzerland |