P
PatentIndex
Search
Landscape
Sign in
Inventor
WOITSCHATZKE HANS
4 patents
⚠️ This page may combine multiple inventors who share the name “WOITSCHATZKE HANS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TRAK INC
3 patents
US4223909A
Sep 23, 1980
Ski with improved three-dimensional running surface
TRAK INC
45 citations
84
US4178012A
Dec 11, 1979
Ski with three-dimensional running surface
TRAK INC
29 citations
79
US4313614A
Feb 2, 1982
Ski and its manufacture
TRAK INC
5 citations
56
TRAK SPORTARTIKEL GMBH
1 patent
US4109931A
Aug 29, 1978
Ski brake
TRAK SPORTARTIKEL GMBH
9 citations
67