Inventor
Willis A. Larson
Inventor
Crystal Lake, IL, US
Overview
Patents· 29 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Hprimary
H01HElectric switches52%
H05KPrinted circuits17%
Y10TTechnical subjects covered by former us classification10%
H03KPulse technique6%
A23CDairy products, e.g. milk, butter or cheese2%
G04CElectromechanical clocks or watches2%
G06FElectric digital data processing2%
H01BCables2%
H01RElectrically-conductive connections2%
H03MCoding2%
PatentTitleYear
4,633,228'Entry error elimination for data systems'19864,559,426'Membrane switch and components having means for preventing creep'19854,433,223'Pressure-sensitive adhesive and application thereof'19844,420,663'Material for electrical devices having a flexible member'19834,418,239'Flexible connector with interconnection between conductive traces'19834,417,114'Connector for attaching an electrical component to a flat sheet'19834,403,272'Membrane switch interconnect tail and printed circuit board connection'1983RE031332'Membrane switch with means for preventing contamination of the interior thereof'19834,394,547'Laminated membrane switch'19834,385,213'Switch and component attachment to flexible printed circuitry'19834,367,380'Keyboard assembly and components therefor'19834,320,573'Method of manufacture for bendable membrane switch'19824,320,272'Connector for attaching an electrical component to a flat sheet'19824,317,013'Membrane switch with universal spacer means'19824,314,114'Laminated membrane switch'19824,307,275'Membrane switch construction and method for making same'19814,251,683'Interconnect tail for a membrane switch'19814,249,044'Membrane switch with means for preventing contamination of the interior thereof'19814,243,852'Membrane switch with means for impeding silver migration'19814,237,358'Isolation membrane switch'19804,034,176'Membrane switch apparatus'19774,017,697'Keyboard membrane switch having threshold force structure'19774,002,923'Touch actuated electronic switch'19773,995,126'Membrane keyboard apparatus'19763,992,634'Touch actuated electronic switch including protection from high potential electricity'19763,988,551'Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors'19763,987,259'Membrane switch apparatus having sequential bridging contact arrangement'19763,981,757'Method of fabricating keyboard apparatus'19763,947,696'Touch actuated electronic switch'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1977Patents assigned to MAGIC DOT INC (6)· patent assignee history
1976–1977Patents assigned to GLOBE UNION INC (3)· patent assignee history
1976–1977Based in Mequon, WI, US· patent location history
1980–1985Patents assigned to OAK INDUSTRIES INC (17)· patent assignee history
1980–1985Based in Crystal Lake, IL, US· patent location history
1982Patents assigned to OAK IND (1)· patent assignee history
1986Patents assigned to AMP INC (1)· patent assignee history
1986Based in North Andover, MA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OAK INDUSTRIES INC | 17 | 1980–1985 |
| MAGIC DOT INC | 6 | 1976–1977 |
| GLOBE UNION INC | 3 | 1976–1977 |
| AMP INC | 1 | 1986 |
| OAK IND | 1 | 1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Crystal Lake, Illinois, US | 19 | 1980–1985 |
| Mequon, WI, US | 9 | 1976–1977 |
| North Andover, Massachusetts, US | 1 | 1986 |