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Patent
D652861
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Priority
Jun 07 2010
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Filed
Jun 07 2010
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Issued
Jan 24 2012
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Expiry
Jan 24 2026
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Assg.orig
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Entity
unknown
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1
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7
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n/a
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The ornamental design for a hydro power calculator, as shown and described.
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FIG. 1 is a front elevational view thereof;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is front perspective view thereof.
The phantom lines shown in the Figures are illustrative of environmental structure only and form no part of the claimed design.
van der Lande, Jan
Patent |
Priority |
Assignee |
Title |
D942534, |
Oct 19 2019 |
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Calculator with electronic tube display and keypad |
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a