Inventor
Keith E. Smith
Inventor
Cedar Rapids, IA, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication35%
H04QSelecting21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
E01HStreet cleaning12%
A46BBrushes3%
B28DWorking stone or stone-like materials3%
B41JTypewriters3%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables3%
E01CConstruction of, or surfaces for, roads, sports grounds, or the like3%
LOC073%
PatentTitleYear
10,689,820Surface cleaning machine for road construction202010,662,593Drag box apparatus202010,309,069Street sweeper2019D0826497Cleaning sponge20188,265,245'Call-processing rate quote system and method'2012RE038973'Sweeper'20066,643,362'Call-processing system and method'20036,279,038'Client interface'20016,263,372'Method and apparatus for interfacing two or more applications in a client server'20016,016,343'Call-processing system and method'20005,903,637'System and method for call conferencing'19995,873,099'System and method for maintaining redundant databases'19995,646,982'System and method for message delivery'19975,590,181'Call-processing system and method'19965,586,175'Call-processing system and method'19965,546,449'System and method for call conferencing'19965,483,587'System and method for call conferencing'19965,470,030'Fabric take-up frame for a textile fabric producing machine'19955,286,122'Ribbon cartridge with take-up arm'19944,926,517'Sweeper'19904,854,002'Gutter broom with locking mechanism'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2020Patents assigned to SMITH KEITH E (7)· patent assignee history
1989–2006Based in Lakeland, FL, US· patent location history
1995Based in High Point, NC, US· patent location history
1996–1999Patents assigned to LINKUSA CORP (6)· patent assignee history
1996–2001Patents assigned to LINK USA CORP (3)· patent assignee history
1996–2012Based in Cedar Rapids, IA, US· patent location history
2012Patents assigned to AUSTIN MARK A (1)· patent assignee history
2012Patents assigned to BERRY DANA BRUCE (1)· patent assignee history
2018Based in Leo, IN, US· patent location history
2019–2020Based in Kathleen, FL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SMITH KEITH Eself | 7 | 1989–2020 |
| LINKUSA CORP | 6 | 1996–1999 |
| LINK USA CORP | 3 | 1996–2001 |
| AUSTIN MARK A | 1 | 2012 |
| BERRY DANA BRUCE | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cedar Rapids, IA, US | 12 | 1996–2012 |
| Kathleen, Florida, US | 3 | 2019–2020 |
| Lakeland, Florida, US | 3 | 1989–2006 |
| Leo, IN, US | 1 | 2018 |
| High Point, NC, US | 1 | 1995 |