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| Patents for Z. Brierley Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-1,193,415 | Jun. 03, 1970 | J.K. Mee | Drill point grinding machines | drill grinders | |
| EP-163,469 | Aug. 26, 1987 | Z. Brierley | Drill point grinding machine | drill grinders | |
| AU-105,851 | Nov. 02, 1989 | Z. Brierley | Document shredder | ||
| GB-2,206,301 | Apr. 03, 1991 | Z. Brierley | Drill grinding machines | drill grinders | |