Helmut Darda

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7712 Blumberg, DT

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Patents Grantslast 30 patents

Information Patent Grant
Spring drive mechanism, particularly for mobile toys
- Patent number 4,053,029
- Issue date Oct 11, 1977
- Helmut Darda
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Toy vehicle with component for storing energy in response to motion...
- Patent number 3,981,098
- Issue date Sep 21, 1976
- Helmut Darda
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...