Loading apparatus
US4928936A · kind A · utility
10Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Sep 12, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/70716
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for loading a planar subject at a predetermined position has holding means operative to hold one one of the planar subject at a predetermined level, and regulating means for detecting the thickness of the planar subject from the amount of operation of the holding means and regulating the level of the other end of the planar subject. This loading apparatus is suitably used in a pattern depicting apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.