Title:
Abacus
United States Patent D812131


Inventors:
Lengdorfer, Sheryle (Gardnerville, NV, US)
Application Number:
29/620142
Publication Date:
03/06/2018
Filing Date:
07/14/2016
Assignee:
Lengdorfer, Sheryle (Gardnerville, NV, US)
Primary Class:
Other Classes:
D19/64
International Classes:
(IPC1-7): 1801
Field of Search:
D18/1, D18/6-11, D19/59, D19/62, D19/64, D19/65, D19/100, D10/96, D10/97, D10/46.1, D21/512, D21/515, D21/468, D21/398
View Patent Images:
US Patent References:
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D674441Counting deviceJanuary, 2013RuleD19/62
20120251986Abacus-type math teaching device and methodOctober, 2012Silas-Martin434/203
D644131Score indicator for tennis courtsAugust, 2011KaruD10/46.1
D598790Scoreboard for tennis courtsAugust, 2009DenessenD10/46.1
20090111351THREE-DIMENSIONAL MAGNETIC AMUSEMENT DEVICEApril, 2009Krochak446/137
D413472Key holderSeptember, 1999DaganD18/6
5205747Bead calculator educational toyApril, 1993Tan434/203
5133684Wire support apparatusJuly, 1992Rhodes248/153
2708797Counting frameMay, 1955Hamer434/203
D149083N/AMarch, 1948Mooney434/203
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1028227COMBINED ADDING APPARATUS AND PENCIL-BOX.June, 1912Kruger434/203
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0580516N/AApril, 1897Andrew434/203
0541787N/AJune, 1895Hegewald et al.434/192
0352218N/ANovember, 1886Bolton et al.235/123



Other References:
Little Genius Students Abacus Multi Color. amazon.in[online] 4 pgs. Available at leasst as early as Apr. 8, 2014(See verified purchase review by Duchyant Bhatt p. 3). [Retrieved on Oct. 16, 2017] https://www.amazon.in/Little-Genius-Students-Abacus-Multi/dp/B00F1D7CO8/261-6073163-9613425?—encoding=UTF8&%2AVersion%2A.
Abacuses.(Design—© Questel). orbit.com.[online PDF] 13 pgs. Print Dates range Mar. 26, 2008 through Sep. 25, 2013. [Retrieved on Oct. 12, 2017] https://sobjprd.questel.fr/export/QPTUJ214/pdf2/847c046b-cc6c-408b-97f1-a54e2bb930aa-235632.pdf.
Primary Examiner:
Hattan, Susan Bennett
Assistant Examiner:
Fast Horse, Marie D.
Attorney, Agent or Firm:
Crosby, John
Claims:
CLAIM

1. The ornamental design for an abacus, as shown and described.

Description:

FIG. 1 is a perspective view of an abacus;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.