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Brand Related Patents


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Hopefully pinning the links will make locating this information easier. Thanks to Antonios for originally organizing the information.


If you have additional patents to add re the companies listed here - go to the thread and add there. For companies not listed, please add the thread in the usual manner, then I'll link here.




Esterbrook Patents

Eversharp - Wahl Patents

Parker Patents

Sheaffer Patents

Waterman Patents

Wearever Patents



Edited to add Parker and Sheaffer.

Edited to add Esterbrook.

Edited by Gerry
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  • 1 month later...
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  • antoniosz


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Gerry, you should ad the links to the Parker and Sheaffer patents in those brand sections.



So if you have a lot of ink,

You should get a Yink, I think.


- Dr Suess


Always looking for pens by Baird-North, Charles Ingersoll, and nibs marked "CHI"

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Thank you Antonios. I should have known you had already done that.... :P


What others are there that I have missed?





Edited by Gerry
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Sorry, Gerry, I should have pointed all of them out earlier.

That's all. Before we could think of others, we need to improve

these ones. They are not complete, especially Waterman and Wahl.

But they will become better with time.... :)


Thanks for pinning them...



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  • 6 years later...
  • 8 years later...

I believe Conklin had a patent on their crescent filler mechanism.  Could be mistaken though.

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