Method for obtaining engravers template
US4139386A · kind A · utility
1Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1976 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Dec 8, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/2014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Method for obtaining an engravers template having a desired pattern therein with engraved portions and raised portions. An aluminum sheet is provided having an aluminum oxide layer on one side and a plastic layer on the opposite side. The desired engraved pattern is etched through the oxide layer and through the aluminum sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.