Assignee

ROBERTS RALPH R

2 granted patents·40 citations·filing 1980–2011

Technology mixG03B1 G07F1 G08B1 G09F1 H04N1

Top patents by PatentIndex Score

2 records

0184US8562145B2Display system and method for projection onto non-planar surfacesROBERTS RALPH R·Filed 2011·Granted Oct 22, 2013·7 cites·15 claims
0269US4297683AVandal alarm system for parking metersROBERTS RALPH R·Filed 1980·Granted Oct 27, 1981·33 cites·8 claims

Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →