3 ms·

Should this have a (1995) appended to it?

• AlbertCory 4y ago
  I thought of that, but it means it expires in 2025. I think. There's a website that give you the expiration date of a patent.
  • kurthr 4y ago
    It's actually on the page (far right middle) and it expired in 2015, which is 20 years after filing (plus any extensions due to delays). Actually, applications before 1996 can be a bit trickier since they (and their children) can be extended for quite a while (that's what some IP firms did in the early 2000s) by delaying their issuance. Patents were originally good for 17 years after issuance (or 20 years from filing if that was longer), whereas now it is only 20 years from filing.
    • AlbertCory 4y ago
      Bad mental arithmetic on me! I knew it changed right around 1995 or 96, though.