RD

Richard Dettbarn

📍 Calgary, CA: #641 of 5,407 inventorsTop 15%
Overall (All Time): #816,024 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
D950105 I-joist — 2022-04-26
D872875 I-joist — 2020-01-14
10240341 Fire-resistant wooden I-joist — 2019-03-26
D796063 I-joist — 2017-08-29
5079885 Insulated wall assembly — 1992-01-14
5003742 Insulated wall assembly — 1991-04-02