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Daryl E. Doorenbos — 5 Patents

Le Mars, IA: #4 of 14 inventorsTop 30%
Iowa: #3,116 of 15,303 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Daryl E. Doorenbos has been granted 5 US patents. The first was granted in 1987 and the most recent in October 1992. Daryl E. Doorenbos ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Daryl E. Doorenbos in Le Mars, IA, US.

Patents per Year

Patents granted per year, 1987 to 1992Bar chart with a peak of 1 patents in 1987.peak 11987: 1 patents19871988: 1 patents19881990: 1 patents19901991: 1 patents19911992: 1 patents1992

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5156176 Stabilized walker device — 1992-10-20
5065865 Pressure-regulated bandage applicator — 1991-11-19
4942988 Device to aid in putting on elastic hose — 1990-07-24
4789087 Device for assisting in putting on elastic hosiery — 1988-12-06
4637532 Device for assisting in putting on elastic hosiery — 1987-01-20

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