A socket-board for reed organs, from 1886.
If it is a U.S. patent, you can go to the USPTO website for patent searches and enter the number in "patent number search".
Patent pending is a warning that a patent application has been filed. It is completely worthless until and unless a patent is actually issued for that invention. Patent number notice means a patent with that number was issued for the invention that is implemented in the product labeled with that number.
There is no specific patent number for the mailbox.
the patent number is 5209584
US patent 4561090 is for an integrated self-checking packet switch node, filed in 1983 by inventor Jonathan S. Turner, and originally assigned to AT&T Bell Laboratories.
A patent number is the code that helps identify an invention.
The US patent number is US 7198789 B2.
You communicate with the Patent Office.
There is no US patent 555408021. There is also no US patent 55408021.
The phone number of the Holland Patent Free Library is: 315-865-5034.
The Frisbee patent was issued on September 30, 1958 as Design Patent number D183,626.