Growing community of inventors

Fairfield, CT, United States of America

Frederick F Stevens, Jr

Average Co-Inventor Count = 1.50

ph-index = 5

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 82

Frederick F Stevens, JrRobert L Hillberg (4 patents)Frederick F Stevens, JrFrederick F Stevens, Jr (6 patents)Robert L HillbergRobert L Hillberg (14 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (4 from 832,812 patents)

2. Bellmore-johnson Tool Co. (1 from 3 patents)

3. Hoff-stevens, Inc. (1 from 2 patents)


6 patents:

1. 4646458 - Rimless cartridge extractor

2. 4472901 - Pistol grip assembly

3. 4407085 - Handgun firing mechanism

4. 4400900 - Multi-barrel handgun firing mechanism

5. 4392320 - Trigger retaining and stabilizing means

6. 3933282 - Universal tavern unit for keg tapping device

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as of
12/19/2025
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