Kienzle Apparate GmbH
66Patents
0Active
66Granted
38Portfolio score
Filing activity: Mar 22, 1974 → Jan 27, 1987
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3953720A | Electronic taximeter for taxis taking a plurality of passengers on overlapping trips | Physics | 69 | Expired |
| US4411239A | Fuel cooling system for use with a closed fuel injection circuit in a diesel engine | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4054922A | Apparatus for forming an erasable record of the value of a measured quantity | Physics | 41 | Expired |
| US4228519A | Monitoring method and system for a parking lot | Physics | 23 | Expired |
| US4183205A | Coin operated parking meter | Physics | 17 | Expired |
| US4524804A | Electropneumatic servo valve for controlling a volume current and pressure, respectively | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4715223A | Device for testing properties of coins | Physics | 14 | Expired |
| US4577683A | Heat exchanger with separate helical ducts | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4354173A | Arrangement for obtaining an indication of efficiency of operation of a motor vehicle | Physics | 14 | Expired |
| US4420748A | Passive data display and method and means for control and monitoring thereof | Physics | 13 | Expired |
| US3931508A | Arrangement for furnishing an indication of total fare including surcharges in an electronic taximeter | Physics | 13 | Expired |
| US4539644A | Electronic taximeter and control system therefor | Physics | 13 | Expired |
| US3937933A | System and method for reducing the pulse repetition rate in an electronic taxi meter | Physics | 12 | Expired |
| US4538643A | Electropneumatic pilot control stage for a pneumatic servo valve | Emerging Cross-Sectional Technologies | 12 | Expired |
| USD293557S | Taximeter | General | 11 | Expired |
| US4574189A | Taximeter assembly | Physics | 11 | Expired |
| US4021645A | Method and apparatus for determining whether an electronic taximeter is in proper working order | Physics | 10 | Expired |
| US4209688A | Electronic taximeter assembly | Physics | 10 | Expired |
| US4251162A | Form band alignment device for a form printer | Performing Operations; Transporting | 9 | Expired |
| US4349286A | Keyboard assembled from individual keys | Electricity | 9 | Expired |
| US4124313A | Keyboard assembly | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4589143A | Information processing mechanism with combined printing and reading device | Physics | 9 | Expired |
| US4578760A | Arrangement for controlling an electronic taximeter | Electricity | 9 | Expired |
| US4056709A | Taximeter indicator arrangement | Physics | 8 | Expired |
| US4607739A | Coin activated timer mechanism | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.