E. F. Jehn

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Laser assembly for marking a line on a workpiece for guiding a cutt...
- Patent number 5,446,635
- Issue date Aug 29, 1995
- Quarton, Inc.
- E. F. Jehn
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Structure of laser pointer
- Patent number 5,307,253
- Issue date Apr 26, 1994
- E. F. Jehn
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES