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1937-10-07 |
1939-07-05 |
Ludwig Boennhoff G M B H |
Spanner
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US3273430A
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1963-11-06 |
1966-09-20 |
Snap On Tools Corp |
Wrench sockets, socket drives and similar couplers
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US3908488A
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1973-10-01 |
1975-09-30 |
Alfred Frederick Andersen |
Minimum stressed wrench
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US4512220A
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1982-04-01 |
1985-04-23 |
Snap-On Tools Corporation |
Fast lead socket wrench
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FR2560099B1
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1984-02-24 |
1986-10-24 |
Facom |
TIGHTENING TOOL FOR HARDWARE
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US4776244A
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1986-06-16 |
1988-10-11 |
Snap-On Tools Corporation |
Open-end wrench
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US4930378A
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1988-04-22 |
1990-06-05 |
David S. Colvin |
Wrench opening engagement surface configuration
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US5131312A
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*
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1989-09-18 |
1992-07-21 |
Macor Richard J |
Surface conforming, torque enhancing wrench
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1989-10-16 |
1992-09-22 |
Snap-On Tools Corporation |
One-piece, open-end wrenching head with roughened jaws
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1990-10-29 |
1991-12-24 |
Snap-On Tools Corporation |
Open-end wrench with reduced size jaws
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1991-04-23 |
1992-03-03 |
Easco Hand Tools, Inc. |
Wrench openings
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1991-11-25 |
1995-04-18 |
Stanley-Proto Industrial Tools, Div. Of Mechanics Tools |
Open end wrench
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FR2703619B1
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1993-04-07 |
1995-07-07 |
Facom |
TOOL FOR TIGHTENING / UNLOCKING A THREADED MEMBER.
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1994-11-28 |
1995-12-19 |
Hsieh; Chih-Ching |
Sleeve module for co-operating with a ratchet wrench
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1996-09-03 |
1999-01-19 |
Snap-On Technologies, Inc. |
Drive configuration with differential driving surfaces
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DE19738079A1
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1997-09-01 |
1999-03-04 |
Werner Hermann Wera Werke |
Power transmission profile, especially on a polygon screwdriver
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USD431432S
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1997-12-03 |
2000-10-03 |
Chih-Ching Hsieh |
Wrench
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SE511447C2
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1997-12-19 |
1999-10-04 |
Kapman Ab |
Tool for turning hexagonal nuts and bolts
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1998-01-23 |
1999-12-07 |
Hsieh; Chih-Ching |
Open end wrench practical for turning normal and worn-out bolts and nuts of different specifications
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1998-01-23 |
2000-11-14 |
Hsieh; Chih-Ching |
Open end wrench for turning normal and worn-out bolts and nuts of different specifications
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1998-01-23 |
2000-01-04 |
Hsieh; Chih-Ching |
Structure of open end wrench
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USD409061S
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1998-05-29 |
1999-05-04 |
Chih-Ching Hsieh |
Wrench
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1998-09-25 |
2000-07-04 |
Proprietary Technologies, Inc. |
Uni-directional open end wrench
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USD412819S
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1998-09-25 |
1999-08-17 |
Proprietary Technologies, Inc. |
Open end wrench head
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FR2800311B1
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1999-11-02 |
2002-01-18 |
Facom |
TIGHTENING / UNLOCKING TOOL WITH ASYMMETRIC PROFILE
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USD440839S1
(en)
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2000-05-23 |
2001-04-24 |
Ying-Chang Lee |
Spanner
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USD474663S1
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2002-01-25 |
2003-05-20 |
Ander Chen |
Wrench
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2002-05-13 |
2004-06-29 |
Clare Lin |
Wrench
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2002-08-05 |
2007-01-30 |
Chih Ching Hsieh |
Wrench opening
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2005-06-07 |
2013-01-29 |
Chih-Ching Hsieh |
Open-end wrench
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US7228764B1
(en)
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2005-12-31 |
2007-06-12 |
Proprietary Technologies, Inc. |
Maximum engagement wrench
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USD553457S1
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2006-06-27 |
2007-10-23 |
Chih-Ching Hsieh |
Spanner
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USD552437S1
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2006-06-27 |
2007-10-09 |
Chih-Ching Hsieh |
Spanner
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USD552438S1
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2006-07-05 |
2007-10-09 |
Proxene Tools Co., Ltd |
Spanner
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USD549059S1
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2006-12-11 |
2007-08-21 |
Proxene Tools Co., Ltd. |
Jaw of open-end wrench
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2008-06-10 |
2013-01-08 |
Apex Tool (Hk) Limited Taiwan Branch |
Ratchetable open-ended wrench
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JP5284856B2
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2009-04-21 |
2013-09-11 |
株式会社マキタ |
Impact tool
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USD603669S1
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2009-04-28 |
2009-11-10 |
Shih-Tsung Hsu |
Wrench head
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JP2011104665A
(en)
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2009-11-12 |
2011-06-02 |
Saburo Hayashi |
Synthetic-resin-made bit connector and connection structure of the same
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JP2013208678A
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2012-03-30 |
2013-10-10 |
Hitachi Koki Co Ltd |
Impact tool
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USD686473S1
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2012-11-13 |
2013-07-23 |
W.State Co., Ltd. |
Wrench
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US9718170B2
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2013-11-15 |
2017-08-01 |
Snap-On Incorporated |
Socket drive improvement
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