Home › Inventors › David P. Calleance

David P. Calleance — 3 Patents

San Francisco, CA: #11,477 of 26,999 inventorsTop 45%

California: #149,087 of 386,348 inventorsTop 40%

Overall (All Time): #1,685,237 of 4,157,543Top 45%

3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4245364	Waterbed safety liner	—	1981-01-20
4193151	Waterbed safety liner	—	1980-03-18
4190917	Baffled watermattress construction	—	1980-03-04