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Eskilstuna, Sweden

Gkn-Stenman Ab

USPTO Granted Patents = 19

Trademarks = 1

Forward Citations = 403

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7 inventors (with patents filed for the assignee):

Bo G Widen (15 out of 38 patents)

Erik R Tranberg (4 out of 4 patents)

Bjorn Rubensson (1 out of 3 patents)

4. Erik Rudolf Tranberg (1 out of 1 patent)

5. Ake T Haggstrom (1 out of 1 patent)

6. Erik A Nilsson (1 out of 1 patent)

7. Bengt O Sjunnesson (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. 4631941 - Cylinder lock with permissible service entry (1986-12-30),

2. 4577479 - Cylinder lock arrangement for preventing picking (1986-03-25),

3. 4548061 - Cylinder-lock attachment means (1985-10-22),

4. D278880 - Key blank (1985-05-21),

5. 4507944 - Cylinder lock combination, a lock cylinder and a key for such a (1985-04-02),

6. D274302 - Coded key blank (1984-06-19),

7. 4453432 - Method of manufacturing a key for a cylindrical lock (1984-06-12),

8. 4393673 - Cylinder lock (1983-07-19),

9. 4356713 - Cylinder lock and key (1982-11-02),

10. D264680 - Locking pin (1982-06-01),

11. 4329768 - Method of manufacturing a lock follower arm with a press-fitted hub (1982-05-18),

12. 4296619 - Anchoring means for door lock plates (1981-10-27),

13. 4294092 - Cylinder lock having spring-actuated pins (1981-10-13),

14. 4266711 - Method of manufacturing a lock cylinder follower (1981-05-12),

15. 4226454 - Lock follower, particularly a handle or pressure follower, and a method (1980-10-07),

Gkn-stenman Ab is a leading manufacturer of high-quality locking solutions for industrial and commercial applications. With over 100 years of experience, the company specializes in providing secure and reliable locking systems for a wide range of industries including automotive, aerospace, and defense. Their innovative products are designed to meet the highest standards of safety and security, making them a trusted partner for customers around the world.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 13 2026

19 Patents

#4 in Eskilstuna

#322 in Sweden

#31,765 in the World

Eskilstuna, Sweden

Gkn-Stenman Ab

Forward Citations = 403

7 inventors:

Bo G Widen (15 out of 38 patents)

Erik R Tranberg (4 out of 4 patents)

Bjorn Rubensson (1 out of 3 patents)

4. Erik Rudolf Tranberg (1 out of 1 patent)

5. Ake T Haggstrom (1 out of 1 patent)

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