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John P. Schaffer — 4 Patents

Langdon, ND: #2 of 7 inventorsTop 30%
North Dakota: #462 of 2,395 inventorsTop 20%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
John P. Schaffer has been granted 4 US patents. The first was granted in 1994 and the most recent in November 2022. John P. Schaffer ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list John P. Schaffer in Langdon, ND, US.

Patents per Year

Patents granted per year, 1994 to 2022Bar chart with a peak of 1 patents in 1994.peak 11994: 1 patents19941997: 1 patents19972020: 1 patents20202022: 1 patents2022

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11512922 Adjustable arrow lift and slide rest — 2022-11-29
10605560 Adjustable arrow lift and slide rest — 2020-03-31
5697355 Cable adjuster and limb pocket assembly for compound bow — 1997-12-16
5331941 Adjustable overdraw for compound bow — 1994-07-26

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