Keyword: drilling

Bohren

drilling

drilling is used as descriptor

 
Identifier Title Date Level of description Other information
EBA 2/293 Tiefbohrungs-Journal 1950 File: 1 file Standard period of protection
EBA 2/294 Kleinkernbohrungen 1949 File: 1 file Standard period of protection
GFA 9/1.13 GF Mitteilungen, Heft 13, 10/1946 1946 File: 1 file digitized | public
GFA 9/3.26 GF intern, Nr. 26, Dezember 1983 1983 File: 1 file digitized | public
GFA 9/3.49 GF intern, Nr. 49, September 1991 1991 File: 1 file digitized | public
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