Schmid, Werner,  1945-2007, <br/><br/>
Patentübersicht Kontrolluhren USA bis zum Jahr 1945  = USA time recorder patents up to 1945 / 
 USA time recorder patents up to 1945 
Werner Schmid. 
 - 20, 48 pages ;  30 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time clocks--Patents.--United States<br/>Clocks and watches--Patents.--United States
<br/><br/><label>Subjects--Index Terms: </label>Time recorder USA Patent