For the Inventor, By the Inventor

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Hertel Ag Werkzeuge+hartstoffe

USPTO Granted Patents = 9

Trademarks = 1

Forward Citations = 126

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10 inventors (with patents filed for the assignee):

Franz Glaser (4 out of 4 patents)

Gebhard Muller (1 out of 5 patents)

Horst Jager (1 out of 5 patents)

4. Johann Kohlbauer (1 out of 1 patent)

5. Hans Durschinger (1 out of 1 patent)

6. Simon Escher (1 out of 3 patents)

7. Gunther Hertel (1 out of 3 patents)

8. Karl Hertel (1 out of 7 patents)

9. Franz Tikal (1 out of 1 patent)

10. Ulrich Krenzer (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 5186584 - Twist drill (1993-02-16),

2. 5137396 - Cutoff tool (1992-08-11),

3. 5035557 - Chuck for axially clamping a tool to a machine tool spindle (1991-07-30),

4. 4913606 - Tool-changeover holder (1990-04-03),

5. 4863323 - Changing and chucking tool (1989-09-05),

6. 4826368 - Twist drill (1989-05-02),

7. 4797041 - Chuck (1989-01-10),

8. 4740122 - Rapid-release chuck (1988-04-26),

9. 4729700 - Drive unit for rotary tools (1988-03-08),

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USPTO Data Jan 1 1976 - Dec 16 2025

9 Patents

#5 in Furth

#4,029 in Germany

Hertel Ag Werkzeuge+hartstoffe

Forward Citations = 126

10 inventors:

Franz Glaser (4 out of 4 patents)

Gebhard Muller (1 out of 5 patents)

Horst Jager (1 out of 5 patents)

4. Johann Kohlbauer (1 out of 1 patent)

5. Hans Durschinger (1 out of 1 patent)

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