Key patent expiration dates
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Revision as of 05:16, 13 November 2011 by Datagram (talk | contribs) (Created page with '=Key Patent Expiration Dates= The following is a reference for the expiration dates of keys and key profiles patents. These are typically associated with high security locks…')
Key Patent Expiration Dates
The following is a reference for the expiration dates of keys and key profiles patents. These are typically associated with high security locks and exist to prevent unauthorized manufacturing of key blanks.
| Manufacturer | Model | Expiration |
| Medeco | Original | 1985 |
| Medeco | Biaxial | 2005 |
| Medeco | KeyMark | 2011 |
| Medeco | M3 | 2021 |
| Medeco | KeyMark X4 | 2027 |
