Inventor
Robert Lisfeld
Inventor
Greifenstein, DE
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus85%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
4,733,954'Microscope support'19884,575,199'Focusing drive for a microscope with flexible drive shaft'19864,572,614'Condenser housing for microscopes'19864,402,576'Adjusting device for the stage of an optical instrument'19834,372,650'Mounting for microscope lens'19834,284,327'Microscope with attachable illuminating devices'19814,283,111'Microscope stand with protected turret'19814,166,671'Apparatus for simultaneous adjustment of the position and aperture of a microscope field stop'19794,136,927'Universal microscope condenser'19794,111,530'Microscope objective mount'19784,090,069'Semi-automatic coarse-fine focusing apparatus for microscopes'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1988Patents assigned to LEITZ ERNST GMBH (11)· patent assignee history
1978–1979Based in Ulm, DE· patent location history
1979Based in Asslar, DE· patent location history
1981–1986Based in Greifenstein, DE· patent location history
1988Based in Bad Sooden-Allendorf, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LEITZ ERNST GMBH | 11 | 1978–1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Greifenstein, DE | 6 | 1981–1986 |
| Ulm, DE | 3 | 1978–1979 |
| Bad Sooden-Allendorf, DE | 1 | 1988 |
| Asslar, DE | 1 | 1979 |