Patent question Dardick tround

[Snackytimes]

I was wondering if anyone had any info on who owns the Dardick tround patent as i was thinking of trying to reproduce the dardick rifle with a different pistol grip angle and barrel length to make a non restricted "rifle" (you have to make a new receiver for it to not be a pistol) that takes trounds in different calibers, 7.62x25tt 9mm, 380autom 32acp, etc. we could 3dprint the tround that holds the round so trounds would be dimes on the dollar and all you'd have to do is load them like a magazine into the rifle.

 

[I Dont Care About You]

Dardick's patent 2,847,784, issued in August 1958

Nobody owns it. Patents have a lifespan and this one has long passed. Make whatever you want.

You will have to find a high temp polymer because most 3D printable polymers get soft at a surprisingly low temperature.

 

[machman]

 

[machman]

I never knew the”tround” idea predated Dardick ! Interesting.

 

[AB3006]

I was wondering if anyone had any info on who owns the Dardick tround patent as i was thinking of trying to reproduce the dardick rifle with a different pistol grip angle and barrel length to make a non restricted "rifle" (you have to make a new receiver for it to not be a pistol) that takes trounds in different calibers, 7.62x25tt 9mm, 380autom 32acp, etc. we could 3dprint the tround that holds the round so trounds would be dimes on the dollar and all you'd have to do is load them like a magazine into the rifle.

Nobody owns it. Patents have a lifespan and this one has long passed. Make whatever you want.

You will have to find a high temp polymer because most 3D printable polymers get soft at a surprisingly low temperature.

Even if it hadn't expired, unless you are doing this commercially (i.e. for sale, distribution - even non-profit distribution, or in a more grey area, for a public video that you then monetize), you are allowed to make use of technologies that are protected by in-force patents.

For more see "Exceptions to Patent Rights": WIPO Patent right exceptions.

Also, patent 2,847,784 is a US patent, so it doesn't even pertain to you as a Canadian, even if it wasn't expired.

 

[I Dont Care About You]

The dirty secret behind patents is that the patent holder has to have the money to sue any infringers.

 

[Rack Grade]

Check out the JohnsonAutomatics.com message board. Go in there and they have a little Dardick section.

Might have info there.

 

[AB3006]

The dirty secret behind patents is that the patent holder has to have the money to sue any infringers.

Or enough money to defend against infringers attempting to invalidate their patent before the PTAB or UPC. Both of which have been gamified by big tech to snap up technologies they like without paying license fees.

 

[Snackytimes]

id love to own the original patten just so i could manufacture something for the world to enjoy, i know it wouldn't be popular in any regard but keeping history available to the future generations is something i think we should all strive for only though legal channels as it is the most proper and truthful method.