Patent number 055391 was issued for an "improvement in the manufacture of bricks" by the United States Patent Office. It was granted to a specific inventor in the 19th century, focusing on enhancing the brick-making process. If you need more specific details about the inventor or the technology, please let me know!
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.
To find a patent number for a specific invention, you can search the United States Patent and Trademark Office (USPTO) website. Use keywords related to the invention to locate the patent in the database. The patent number will be listed on the patent document once you find it.
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 patent number for the invention described in US6506148 is 6,506,148.