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US1889537A
(en)
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1932-05-06 |
1932-11-29 |
Cairns Edward |
Helmet
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US2025772A
(en)
|
1934-05-19 |
1935-12-31 |
Mine Safety Appliances Co |
Protective headgear
|
|
US2663874A
(en)
|
1951-10-26 |
1953-12-29 |
Lyon George Albert |
Plastic helmet
|
|
US2688747A
(en)
|
1952-05-26 |
1954-09-14 |
B F Mcdonald Company |
Plastic helmet
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US3273162A
(en)
|
1964-12-03 |
1966-09-20 |
Welsh Mfg Co |
Hard hat with reinforcing ribs
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USD244491S
(en)
|
1975-05-02 |
1977-05-31 |
Gullfiber Ab |
Safety helmet with ear muffs for hearing protection and fastening device therefor
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GB2034812B
(en)
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1978-11-17 |
1983-01-19 |
Lucas Industries Ltd |
Fuel injection nuozzles
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US4223409A
(en)
|
1979-04-30 |
1980-09-23 |
Lee Pei Hwang |
Helmet provided with shockproof and ventilative device
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DE3222681C2
(en)
|
1982-06-16 |
1985-04-18 |
Egon 4830 Gütersloh Busch |
Protective helmet and method of manufacturing protective helmets
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USD275334S
(en)
|
1982-06-28 |
1984-09-04 |
Pullin Fred L |
Hard hat with solar-powered cooling means
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DE3325601C2
(en)
|
1983-07-15 |
1985-06-27 |
Bayerische Motoren Werke AG, 8000 München |
Protective helmet for motorcyclists
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|
FR2629986B1
(en)
|
1988-04-19 |
1991-01-11 |
Electricite De France |
VERSATILE PROTECTIVE HELMET
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DE8811560U1
(en)
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1988-09-13 |
1989-11-16 |
Schuberth-Werk Gmbh & Co Kg, 3300 Braunschweig, De |
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US5023958A
(en)
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1989-09-01 |
1991-06-18 |
Rotzin Stephen A |
Aerodynamic bicycle helmet
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USD358905S
(en)
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1992-06-25 |
1995-05-30 |
Stinson david g |
Safety helmet
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USD411339S
(en)
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1998-06-04 |
1999-06-22 |
Construction Safety Association of Ontario |
Helmet
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US6453476B1
(en)
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2000-09-27 |
2002-09-24 |
Team Wendy, Llc |
Protective helmet
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USD460584S1
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*
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2001-05-07 |
2002-07-16 |
Pabban Development, Inc. |
Helmet with air flow rib structure
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JP3563044B2
(en)
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2001-06-06 |
2004-09-08 |
有限会社トイズマッコイプロダクト |
Helmet
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USD468062S1
(en)
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2001-10-01 |
2002-12-31 |
Armondo T. Santiago |
Hard hat with compartment for fan
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US6694529B1
(en)
|
2002-11-25 |
2004-02-24 |
Tzu Tao Chiu |
Helmet structure
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USD490939S1
(en)
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2003-01-23 |
2004-06-01 |
Chang-Hsien Ho |
Safety helmet
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USD498880S1
(en)
*
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2003-09-17 |
2004-11-23 |
Hubert Tod Jones |
Helmet
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USD545501S1
(en)
*
|
2006-05-30 |
2007-06-26 |
Pabban Development Inc. |
Helmet with air flow rib structure
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CN200941837Y
(en)
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2006-08-28 |
2007-09-05 |
柳春 |
Reinforced type safety helmet
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US8225419B2
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*
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2006-09-14 |
2012-07-24 |
Mine Safety Appliances Company |
Protective helmet
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IT1393926B1
(en)
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2008-07-24 |
2012-05-17 |
New Max Srl |
STRUCTURE OF REINFORCED PROTECTION HELMET.
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KR100889369B1
(en)
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2008-10-01 |
2009-03-19 |
신동일 |
A hat for protecting head
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USD648899S1
(en)
*
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2010-01-15 |
2011-11-15 |
Elvex Corporation |
Safety helmet
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FR2956565B1
(en)
|
2010-02-19 |
2012-02-10 |
Msa Gallet |
SAFETY HELMET
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EP2389822A1
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*
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2010-05-26 |
2011-11-30 |
The Royal College of Art |
Helmet
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USD667590S1
(en)
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2011-06-07 |
2012-09-18 |
Jsp Limited |
Helmet
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|
USD670034S1
(en)
*
|
2011-10-05 |
2012-10-30 |
Melvin Kolodziej |
Vented construction hard hat
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|
USD695460S1
(en)
*
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2012-10-04 |
2013-12-10 |
Pyramex Safety Products, LLC |
Safety helmet
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USD697270S1
(en)
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2013-02-15 |
2014-01-07 |
Elwood J. B. Simpson |
Football helmet shell
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USD696463S1
(en)
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2013-02-15 |
2013-12-24 |
Elwood J. B. Simpson |
Football helmet shell
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CN103271488A
(en)
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2013-05-27 |
2013-09-04 |
陈景华 |
Field operation helmet
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KR101397508B1
(en)
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2013-07-24 |
2014-05-20 |
이정원 |
Helmet for bullet reflection
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USD705492S1
(en)
*
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2013-09-19 |
2014-05-20 |
Honeywell International Inc. |
Hardhat
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USD742597S1
(en)
*
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2014-02-17 |
2015-11-03 |
Chien-Chih Peng |
Protective helmet
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USD743106S1
(en)
*
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2014-02-17 |
2015-11-10 |
Chien-Chih Peng |
Protective helmet
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USD743629S1
(en)
*
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2014-02-17 |
2015-11-17 |
Chien-Chih Peng |
Protective helmet
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USD742598S1
(en)
*
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2014-02-17 |
2015-11-03 |
Chien-Chih Peng |
Protective helmet
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