Assignee
KELLNER FERDINAND
5 granted patents·21 citations·filing 1977–1980
Top patents by PatentIndex Score
5 records- 0174US4095246ABellows setting equipmentKELLNER FERDINAND·Filed 1977·Granted Jun 13, 1978·11 cites·10 claims
- 0252US4213686ACloseup focusing mechanism for an objective of long focal lengthKELLNER FERDINAND·Filed 1979·Granted Jul 22, 1980·4 cites·4 claims
- 0351US4226518APhotographic camera having long focal length objectiveKELLNER FERDINAND·Filed 1979·Granted Oct 7, 1980·4 cites·5 claims
- 0434US4319816APrism viewfinder for reflex cameras with built-in light meterKELLNER FERDINAND·Filed 1980·Granted Mar 16, 1982·2 cites·10 claims
- 0524US4319815APrism view finder for reflex cameras with built-in exposure meterKELLNER FERDINAND·Filed 1980·Granted Mar 16, 1982·0 cites·5 claims
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