Skip to content
PatentBrief

Portfolio comparison

Margaret E. Knight vs 0912139 B C Ltd

Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.

Company A

Margaret E. Knight

Patents indexed

1

Year range

1871

Most recent

1871

mechanicalmanufacturingconsumer_goodspackaging

Activity by Decade

1870s
1

Company B

0912139 B C Ltd

Patents indexed

1

Year range

2018

Most recent

2018

consumer_electronics

Activity by Decade

2010s
1

How to use

Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.