RB

Robert Butcher

MA Manville: 2 patents #28 of 159Top 20%
Overall (All Time): #843,467 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9598887 Hidden hinge door system and method for use in residential and commercial buildings Margaret B. Reed 2017-03-21
7717232 Ladder stand with optional extension member, kit for constructing height-adjustable ladder stand, and method of using same 2010-05-18
6832464 Plastics packaging Wayne A. Wilson 2004-12-21
5485922 Portable computer carry case assembly 1996-01-23
4848044 Expansion joint cover Allan R. LaRoche, Jean A. Dubuc, Douglas S. Pearmain 1989-07-18
4663894 Flexible gutter Allan R. LaRoche, Denis M. Kelleher, Marcel L. M. Corriveau, Jean A. Dubuc 1987-05-12