Inventor
Mark D. Zitka
Inventor
Lafayette, LA, US
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling40%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids20%
F16CShafts20%
F16DCouplings for transmitting rotation20%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991Patents assigned to TELECO OILFIELD SERVICES INC (2)· patent assignee history
1991Based in Lafayette, LA, US· patent location history
2005Patents assigned to ROBBINS & MYERS ENERGY SYS LP (1)· patent assignee history
2005Based in The Woodlands, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TELECO OILFIELD SERVICES INC | 2 | 1991 |
| ROBBINS & MYERS ENERGY SYS LP | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lafayette, LA, US | 2 | 1991 |
| The Woodlands, Texas, US | 1 | 2005 |