In 1957, John and Andrew Doney developed a hard-bearing device for balancing rotors. They patented their invention at the U.S. Patent and Trademark Office, but it was never used as an automobile wheel balancer. The Doneys’ device was eventually used by Exetron Corp., a company that later made a similar product.
In 1962, John and Andrew Doney developed a hard-bearing device for balancing rotors. They obtained a patent for their invention. Exetron Corp. has since produced an automobile wheel balancer that uses a similar design. It’s unclear whether or not the Doneys’ patent applies to this new automobile wheel balancer. However, it may have infringed upon the Doneys’ patent.
After Doneys’ invention was patented, the company did use a hard bearing in their automobile wheel balancer. The Exetron product was never made into an automobile wheel balancer, but it had a support plate that was similar to the Doneys’. The company didn’t copy the Doneys’ device, so the company’s use of the device may not be infringing on the patent.
In the 1980s, John and Andrew Doney and a team at the University of Nebraska created a hard-bearing device to balance rotors. The Doneys patented this device, but it wasn’t ever used in automobile wheel balancers. In fact, the Doneys’ device was so controversial that it has been cited in the United States Patent and Trademark Office.
In the 1980s, John and Andrew Doney invented a hard-bearing device for balancing rotors. While the Doneys’ device was never used in automobile wheel balancers, it was used in other applications. Inexetron’s wheel balancers are the same model as the Doneys’ machine. But this device isn’t legal unless it is infringing the Doneys’ patent.
The Doneys’ hard-bearing device is not legal for automobile wheel balancers, as it may cause a car’s balance to become unbalanced. In the case of a car wheel balancer, it’s important to know the laws before suing. The Doneys’ device was patented in 1897, but hasn’t been used in a car.
The Doneys’ patent is valid because they’re using the same principle of balancing rotors. The Doneys invented a hard-bearing device in the 1920s, but the device was never used in automobile wheel balancers. The Doneys’ invention was patented and has never been used. This is a legal precedent and could prevent the Doneys from using their device.
In the year 2000, John and Andrew Doney invented a hard-bearing device to balance rotors. Their device was not used as an automobile wheel balancer. Several companies later produced a similar device. While the Doneys’ patent was not valid, Exetron’s use of the Doneys’ invention may have violated the law. And the Doneys’ patent has been invalidated.
Despite this patent, the Doneys’ hard-bearing device for balancing rotors was never used as a wheel balancer. But Exetron’s hard-bearing wheel balancers were patented in 1957 and Exetron has already produced a similar product. The Doneys’ patents are invalid because the Exetron product does not use the Doneys’ device.