Timeline for Is this patent US6323569 B1 still valid? Valid till? End date?
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Jul 18, 2015 at 15:00 | comment | added | Parker | This answer was close but should have also noted that if the fee payment was missed, then the effective date for expiration would be November 27, 2013. | |
| Dec 21, 2012 at 17:49 | history | edited | m3lvn | CC BY-SA 3.0 |
added the ultimate expiration date
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| Dec 20, 2012 at 8:16 | history | answered | Epicentre | CC BY-SA 3.0 |