Demonstration tool
Latest Carl Zeiss Vision International GmbH Patents:
- Devices and methods for processing eyeglass prescriptions
- Spectacle lens design, method of manufacturing a spectacle lens and method of providing a spectacle lens for at least retarding myopia progression
- Spectacle lens and method for generating design data for a spectacle lens
- Spectacle lens and method for manufacturing a spectacle lens
- METHOD FOR MANUFACTURING A SPECTACLE LENS
Description
Claims
The ornamental design for a demonstration tool, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
| D130399 | November 1941 | Volf |
| D255038 | May 20, 1980 | Itakura |
| D328765 | August 18, 1992 | Strom, Jr. |
| D358408 | May 16, 1995 | McGarry |
| D474596 | May 20, 2003 | Osiecki |
| D525429 | July 25, 2006 | Lalwani |
| D619089 | July 6, 2010 | Chen |
| D657560 | April 17, 2012 | Schulz |
| D839583 | February 5, 2019 | Cao |
| D859519 | September 10, 2019 | Ye |
| D870451 | December 24, 2019 | Birger |
| 2002204881 | July 2002 | JP |
| 2004016660 | January 2004 | JP |
Patent History
Patent number: D880153
Type: Grant
Filed: Jul 9, 2018
Date of Patent: Apr 7, 2020
Assignee: Carl Zeiss Vision International GmbH (Aalen)
Inventor: Matthias Marx (Gschwend)
Primary Examiner: Holly E Thurman
Application Number: 29/655,958
Type: Grant
Filed: Jul 9, 2018
Date of Patent: Apr 7, 2020
Assignee: Carl Zeiss Vision International GmbH (Aalen)
Inventor: Matthias Marx (Gschwend)
Primary Examiner: Holly E Thurman
Application Number: 29/655,958
Classifications
Current U.S. Class:
D3/274