The tag has no wiki summary.

learn more… | top users | synonyms

1
vote
1answer
62 views

Patent granted in 2009 on published research results in 2003

I'm a researcher doing work in Information Retrieval. One of the papers I stumbled upon was this: Andrei Z. Broder, David Carmel, Michael Herscovici, Aya Soffer, Jason Y. Zien: Efficient query ...
0
votes
1answer
54 views

Looking for information about an old Patent

I am researching the mechanical development of tools used by Fisheries in the Bristol Bay area. I'm in possession of a tool marked, "OKILL'S PATENT PRESSURE INDICATOR, NEW TYPE PATENT No. 144034. ...
0
votes
1answer
80 views

Why are the assignors of a patent not necessarily identical with previous assignees?

When I researched the assignment history of a patent I found one assignment (from assignor A to assignee B) and a later assignment (from assignor B and C to assignee D). Where does C come from?