IP Library › Granted Patent US D457,962
Granted Patent Design
US D457,962 · Confirmation No. 4194

AUTOMATIC REFRACTOMETER

Inventor: Werner Hoelbl
Patented Case View Patent ↗
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 Code Description Pages PDF
2001-11-08 TRNA Transmittal of New Application 4 View
2001-11-08 SPEC Specification 1 View
2001-11-08 DRW Drawings-only black and white line drawings 5 View
2001-11-08 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US D457,962
App. No.
29/151,498
Filed
2001-11-08
Granted
2002-05-28
Art Unit
2914
PTA
0 days