Edward H. Calkins

📍 Gaylord, MI: #69 of 302 inventorsTop 25%

🗺 Michigan: #27,158 of 86,293 inventorsTop 35%

Overall (All Time): #1,672,766 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4730626	Dry bowl smoker's pipe	—	1988-03-15
4577645	Reduced moisture smoker's pipe	—	1986-03-25
4362169	Air flow dry bowl pipe	—	1982-12-07