Questions about the history of the patent system or the histories of specific patents.

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Does part ownership in a patent mean the owner was a contributor to the invention?

In reference to the patent: US 1,095,168 A My great-grandfather received royalties in the amount of 5/375 interest from this patent, even though his name appears no where in the documentation. Does ...
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1answer
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Questionable accuracy [duplicate]

In reference to the patent: US3137203 Why was the inventor's name changed when Google took custody of the document? Joseph Brown was not the inventors name. As the grandson of the true inventor, I ...
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What does the title “Assigm” mean? Is it a typo? [duplicate]

In reference to the patent: US383746 In the drawing and description it refers to the item as a "Lubricator", but the title of the patent is shown as "Assigm".
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2answers
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How can I determine the date of a patent sale?

My great grandmother Lizzie M. Adams sold her patent (number 680,106) to C. H. Munson in the early 1900s, I think. I have a newspaper article of the sale but no date.
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1answer
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Did the inventor present a working model for this patent

In reference to the patent: US 257,885 The patent has the word "Model" written at the top left corner of its first page. What does that indicate? Here is a screenshot of the patent's PDF, accessed ...
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3answers
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Did the Soviets do patents?

I know Russians do patents now, but did the Soviets of the USSR do them? When did the patent system start in Russia?
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1answer
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What is Patent #100? Are all numbers used?

Google has a patent service (if you don't already know). Here are some example URLs: http://www.google.com/patents/US1 http://www.google.com/patents/US99 http://www.google.com/patents/US101 ...
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Was there a landmark controversial software patent of a trivial idea before the “XOR flashing cursor” patent?

Currently the majority of bad press about trivial software patents is all centred around Apple and other smartphone industry players. A few years ago it was the Amazon "1-click" patent everybody was ...