Inventor
Martin P. Gierke
Inventor
Baltimore, MD, US
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Lprimary
A47LDomestic washing or cleaning17%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy17%
H01RElectrically-conductive connections17%
LOC1417%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
A01GHorticulture8%
LOC158%
PatentTitleYear
D0444459'Protective assembly'2001D0418836'Radio'2000D0386841'Vegetation blower apparatus'1997D0363656'Cordless circular saw'1995D0351096'Hedge trimmer'19945,217,395'Low-voltage, high current capacity connector assembly and mobile power tool and appliance operating system'1993D0333309'Lawn mower with bag'1993D0330210'Lawn mower'1992D0325856'Hedge trimmer'19925,095,259'Low voltage, high current capacity connector assembly and mobile power tool and appliance operating system'1992D0323725'Portable blower'1992D0323724'Portable blower'1992D0320293'Portable blower'1991D0320101'Portable blower'1991D0319714'Portable blower'1991D0319122'Portable blower'1991D0316216'Battery-operated ratchet wrench'1991D0310437'Combined portable power vacuum and blower'19904,945,604'Portable blower'19904,884,314'Portable blower'1989D0304543'Battery-operated screwdriver or similar article'1989D0303205'Battery-operated screwdriver or similar article'1989D0302971'Battery pack for use with portable power tools or the like'1989D0300920'Battery pack for use with portable power tools or the like'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2001Patents assigned to BLACK & DECKER INC (22)· patent assignee history
1989–1997Based in Baltimore, MD, US· patent location history
1989Based in St. Michaels, MD, US· patent location history
1993Patents assigned to BLACK & DECKER CO INC (1)· patent assignee history
1997Patents assigned to BLACK & DECKER (1)· patent assignee history
2000–2001Based in Towson, MD, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BLACK & DECKER INC | 22 | 1989–2001 |
| BLACK & DECKER | 1 | 1997 |
| BLACK & DECKER CO INC | 1 | 1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Baltimore, Maryland, US | 21 | 1989–1997 |
| Towson, Maryland, US | 2 | 2000–2001 |
| St. Michaels, Maryland, US | 1 | 1989 |