Abacus
Description
Claims
The ornamental design for an abacus, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
D136472 | October 1943 | Hamlin |
D198847 | August 1964 | Mathison |
3829994 | August 1974 | Dillon |
D330168 | October 13, 1992 | Stoian |
D417405 | December 7, 1999 | Tsai |
6315675 | November 13, 2001 | Ho |
D504919 | May 10, 2005 | Dinwiddie, Jr. |
D513762 | January 24, 2006 | Young |
D812131 | March 6, 2018 | Lengdorfer |
D813306 | March 20, 2018 | Rule |
20070048708 | March 1, 2007 | Lee |
20170102729 | April 13, 2017 | Ylitalo |
20170236430 | August 17, 2017 | Kalia |
3130114 | February 1983 | DE |
- Facebook. Link: https://www.facebook.com/optimotus/. Jun. 22, 2018. AMRAP abacus. (Year: 2018).
Patent History
Patent number: D835716
Type: Grant
Filed: Jul 18, 2017
Date of Patent: Dec 11, 2018
Inventors: Megan Clifford (Wilton, NH), Daniel Blackmer (Wilton, NV)
Primary Examiner: Ian Simmons
Assistant Examiner: Lauren D McVey
Application Number: 29/610,965
Type: Grant
Filed: Jul 18, 2017
Date of Patent: Dec 11, 2018
Inventors: Megan Clifford (Wilton, NH), Daniel Blackmer (Wilton, NV)
Primary Examiner: Ian Simmons
Assistant Examiner: Lauren D McVey
Application Number: 29/610,965
Classifications