1 Subjects: “...Patent medicines / Catalogs...”

2 Subjects: “...mechanical patent classification...”

3 Subjects: “...Patents law / bicssc...”

4 Subjects: “...patent analysis...”

5 Subjects: “...; graphic arts; history; intellectual property; law; lithographs; nineteenth century; paintings; patents...”

6 Subjects: “...off-patent...”

7 Subjects: “... property law::LNRD Patents law...”

8 Subjects: “...patent landscape...”

9 Subjects: “...patent application...”

10 Subjects: “...patent...”

11 Subjects: “...patent...”

12 Subjects: “...patenting...”