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Patent
D621930
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Priority
Aug 04 2009
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Filed
Aug 04 2009
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Issued
Aug 17 2010
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Expiry
Aug 17 2024
TERM.DISCL.
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Assg.orig
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Entity
unknown
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4
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32
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n/a
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The ornamental design for a grooved piston, as shown and described.
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FIG. 1 is a perspective view of a top perspective view showing the new design for a grooved piston;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a bottom plan view thereof.
The portions of the grooved piston shown in broken lines form no part of the claimed design.
Maxa, Steven J., Cernohous, Adam J.
| Patent |
Priority |
Assignee |
Title |
| 3998224, |
Aug 15 1973 |
MERCANTILE & TECHNICAL PROMOTIONS INC |
Disposable self-destructible syringes which render themselves unreusable |
| 4252118, |
Apr 23 1976 |
|
Non-reusable drug prefilled syringe assembly and method of use |
| 4660569, |
Feb 10 1986 |
SEALSYRINGE CORPORATION, A CORP OF CA |
Venting, automatic-stopping, aspirating plungers for syringes |
| 4826483, |
May 05 1988 |
BOYD, PAUL F , 50% PERCENT |
Non-reusable syringe |
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Aug 29 1989 |
|
Restricted use hypodermic syringe |
| 5042695, |
Jun 17 1988 |
GUALA DISPENSING S R L ; GUALA CLOSURES S P A , A CORP OF ITALY |
Dispenser of paste products having a venting piston |
| 5183466, |
Aug 29 1989 |
|
Restricted use hypodermic syringe |
| 5360146, |
Jan 23 1992 |
Musashi Engineering Inc. |
Liquid dispenser plunger |
| 5453093, |
Sep 30 1994 |
PERRY ROWAN SMITH , JR REVOCABLE TRUST AND PERRY ROWAN SMITH, JR |
Disposable dental syringe |
| 5738655, |
Jul 15 1996 |
UNIQUE MANAGEMENT ENTERPRISES, I NC |
Nonrefillable syringe |
| 5865803, |
May 19 1997 |
|
Syringe device having a vented piston |
| 6503084, |
Feb 24 2000 |
Dentsply Research & Development Corp |
Method for dispensing dental materials |
| 6572565, |
Oct 10 2001 |
REVOLUTIONS MEDICAL CORPORATION |
Blood sampling assembly with a retractable needle |
| 6632198, |
Oct 15 1999 |
Becton Dickinson and Company |
Retracting needle syringe |
| 6916308, |
Jun 08 2000 |
IZI Medical Products, LLC |
High pressure injection syringe |
| 7101351, |
Nov 03 2003 |
Becton, Dickinson and Company |
Safety device for a syringe |
| 7128246, |
Aug 17 2000 |
3M Deutschland GmbH |
Slotted plunger |
| 7503905, |
Oct 03 2005 |
Ultradent Products, Inc. |
Venting syringe plunger |
| 7547297, |
May 11 2001 |
West Pharmaceutical Services Deutschland GmbH & Co. KG |
Pharmaceutical syringe piston |
| 20020077598, |
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|
| 20030233075, |
|
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| 20050137533, |
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| 20060178643, |
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| 20070250004, |
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|
| 20080097387, |
|
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| 20080154192, |
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|
| D581528, |
Jun 25 2007 |
DAIKYO SEIKO, LTD. |
Piston for syringe |
| D583938, |
Dec 21 2007 |
DAIKYO SEIKO, LTD. |
Piston for syringe |
| GB1475430, |
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| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a