The Astronomy SE question Did a watch company really try to sue radio astronomers for using the word "pulsar"? If so, which astronomers? includes the following quote from Jocelyn Bell Burnell, the rebound radio astronomer who discovered pulsars:
These days as you know the name has traveled. There's watches called pulsars, certainly in the UK there's models of Nissan cars, you can sometimes find geraniums called pulsars, same name.
I'm told that in the United States the watch company tried suing the radio astronomers for use of the name!
The question there in Astronomy asks if this lawsuit happened and if so, which astronomers were sued.
Here however I would like to ask how to search for lawsuits where the Hamilton Watch Company may have sued astronomers or astronomical organizations for using the word "pulsar" in a way that infringes somehow on their (potentially trademarked) Pulsar watch.
If a byproduct of that answer happens to be an answer to that question as well, please feel free to post an answer to that question there.
Some information that might be used in constructing a search:
Notes from the video Jocelyn Bell Burnell Special Public Lecture: The Discovery of Pulsars (video cued at 48:37)
Jocelyn Bell Burnell, winner of the 2018 Special Breakthrough Prize in Fundamental Physics, delivered a special talk at Perimeter Institute about her 1967 discovery of pulsars and her remarkable career in physics.
Note that Dr. Bell Burnell raises her hand (perhaps in victory?) when she mentions this, and in the same context mentions the suggesting party of the term Anthony R. Michaelis:
Whilst at the Daily Telegraph, in 1968, Michaelis was the first person to coin and use the term "Pulsar" to describe the discovery of Jocelyn Bell Burnell and Antony Hewish of the "Pulsating Radio star" in 1967.
From Wikipedia's Pulsar (watch):
In 1970, Pulsar was a brand of the American Hamilton Watch Company which first announced that it was making and bringing the LED watch to market. It was developed jointly by American companies Hamilton and Electro/Data Inc.
In spring 1972, the first Pulsar watch was marketed by Hamilton Watch (the parent company, not the Hamilton Watch Division). With an 18-carat gold case, the world's first all-electronic digital watch was also the first to use a digital display – created with light-emitting diodes (LEDs). A button was pressed to display the time. The first Pulsar initially sold for $2100 ($13,400 in 2020 dollars).