USPatentGranted
S

Portable electronic calculator

Granted 16 Jul 1991 · no office action yet

Current assignee: Sekisui Kagaku Kogyo K.K. · originally Sekisui Kagaku Kogyo Kabushiki Kaisha

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Inventors: Shiro Tsukamoto · Examiner: Nelson C. Holtje · AU 293 · TC 2900

Application
422375
filed 16 Oct 1989
Publication
Not published
not published
Patent· this page
US D318287
granted 16 Jul 1991

Life of the patent

2 dated events
⤢ drag to zoomOct 1989Jan 1990Apr 1990Jul 1990Oct 1990Jan 1991Apr 1991Jul 1991Prosecution
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Description

1 parts
›FIG. 1 is a top plan view of…

FIG. 1 is a top plan view of a portable electronic calculator showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a rear elevational view;

FIG. 4 is a front elevational view;

FIG. 5 is a left side elevational view;

FIG. 6 is a right side elevational view.

the grant prints no section headings; every part label below is ours, taken from that part's own first words

Claims

1 · 1 independent · depth 1
1 granted claims

Classifications

1 codes
USPC · US Patent Classification
D18/7

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Pendency
1.7 y
638 days filing → grant
Office actions
0
on the grant's record
Examiner
Nelson C. Holtje
art unit 293 · TC 2900
Citations: 2 back · 0 forward

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