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Patent
D649989
Priority
Jun 29 2011
Filed
Jun 29 2011
Issued
Dec 06 2011
Expiry
Dec 06 2025
Assg.orig
Entity
unknown
17
13
n/a
The ornamental design for dual helical cutter for a pencil sharpener , as shown and described.
FIG. 1 is a front perspective view of a dual helical cutter for a pencil sharpener showing the placement of the two cutting devices relative to one another;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a side elevation view thereof;
FIG. 4 is rear perspective view thereof; and,
FIG. 5 is a rear elevation view thereof.
Dunlap, Benjamin
Patent
Priority
Assignee
Title
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Aug 20 2013
HUNTING ENERGY SERVICES INTERNATIONAL LIMITED
Drilling tool
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MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO , LTD
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HUNTING ENERGY SERVICES INTERNATIONAL LIMITED
Drilling tool
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MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO , LTD
Gear cutting tool
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MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO , LTD
Gear cutting tool
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Jan 31 2018
Beijing SMTP Technology Co., Ltd.
Ultrasonic cutter head
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Hong Ann Tool Industries Co., Ltd.; HONG ANN TOOL INDUSTRIES CO , LTD
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Patent
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Date
Maintenance Fee Events
n/a
Date
Maintenance Schedule
n/a