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For the Inventor, By the Inventor

Toledo, OH, United States of America

Eltra Corporation


USPTO Granted Patents = 82

Trademarks = 29

Forward Citations = 954

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86 inventors (with patents filed for the assignee):

goldMedal William J Roberts (5 out of 10 patents)

silverMedal Walter I Hansen (5 out of 8 patents)

bronzeMedal Calvin V Kern (5 out of 6 patents)

4.  Jeffrey T Major (4 out of 8 patents)

5.  Richard W Mattson (4 out of 7 patents)

6.  Henry E Jensen (3 out of 4 patents)

7.  Carl K Dudley (3 out of 4 patents)

8.  John P Badger (2 out of 4 patents)

9.  Gary E Lang (2 out of 5 patents)

10.  Andrew T Tershak (2 out of 2 patents)

11.  Norman F Sieja (2 out of 3 patents)

12.  Herbert Klepper (2 out of 2 patents)

13.  Roger J Lang (2 out of 5 patents)

14.  Elwin J Brayley (2 out of 2 patents)

15.  Raymond D Miele, Jr (2 out of 2 patents)


Core Competencies:
Hydraulic Cylinder
Electronic Ignition
Lead-Acid Battery
Electro-Optical Scanner
Dynamoelectric Machine
Magneto Ignition
Character Generation
Throttle Pedal Feedback
Dust Collection
Voltage Detection
Speed Control
Curing Electrodes

82 patents:

1. 4718330 - Hydraulic cylinder (1988-01-12),
2. 4371833 - Speed switch (1983-02-01),
3. 4369666 - Starter drive assembly (1983-01-25),
4. 4368717 - Automatic shut-off circuit for electronic ignition system (1983-01-18),
5. 4359597 - Twisted pair multi-conductor ribbon cable with intermittent straight (1982-11-16),
6. 4359508 - Lead-acid storage battery (1982-11-16),
7. 4354466 - Idle speed controller (1982-10-19),
8. 4348840 - Modular hazardous dust collection pan and walkway (1982-09-14),
9. 4347819 - Ignition spark advance using a constant peak to peak amplitude timing (1982-09-07),
10. 4347455 - Removable brush holder with brush clamping device (1982-08-31),
11. 4346377 - Method and apparatus for encoding and generating characters in a display (1982-08-24),
12. 4345553 - Multiple step advance with magnetic trigger rotor (1982-08-24),
13. 4345245 - Method and apparatus for arranging segmented character groups in a (1982-08-17),
14. 4344008 - Brush spring tension adjustment for dynamoelectric machine (1982-08-10),
15. 4343153 - Anti-supercharge pressure valve (1982-08-10),
Eltra Corporation is a leading provider of electrical and automation solutions. With over 50 years of industry experience, we specialize in delivering innovative products and services to a wide range of industries. Our expertise includes control systems, power distribution, industrial automation, and energy management. Through our commitment to quality and customer satisfaction, we have built a strong reputation as a trusted partner for businesses seeking reliable solutions for their electrical needs.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

82 Patents

#15 in Toledo, OH

#198 in Ohio

#4,353 in US

#8,900 in the World

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Toledo, OH, United States of America

Eltra Corporation

Forward Citations = 954

86 inventors:

goldMedal William J Roberts (5 out of 10 patents)

silverMedal Walter I Hansen (5 out of 8 patents)

bronzeMedal Calvin V Kern (5 out of 6 patents)

4.  Jeffrey T Major (4 out of 8 patents)

5.  Richard W Mattson (4 out of 7 patents)

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