| Patents for E01F 9 - Arrangement of road signs or traffic signals; Arrangements for enforcing caution, e.g. speed bumps (11,392) |
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| 04/15/1980 | US4197807 Collapsible traffic cone marker |
| 04/08/1980 | US4196550 Post |
| 04/02/1980 | EP0009235A1 Sign post |
| 04/01/1980 | US4195945 Snowplowable pavement marker and base member therefor |
| 03/25/1980 | US4194338 Construction components, assemblies thereof, and methods of making and using same |
| 03/19/1980 | EP0008911A1 Improvements in or relating to collapsible conical elements |
| 03/18/1980 | CA1073876A1 Light reflecting surface |
| 03/11/1980 | CA1073573A1 Traffic paint method and composition |
| 03/04/1980 | US4191449 Guard-rail reflector |
| 02/26/1980 | US4190380 Device in concrete blocks |
| 02/20/1980 | EP0007963A1 Method and device for measuring or detecting a mechanical change of state or its time derivative |
| 02/12/1980 | US4188150 Highway lane marker |
| 01/29/1980 | CA1070623A1 Shopping cart braking apparatus |
| 01/23/1980 | EP0006984A1 Signal or light pole for traffic areas |
| 01/22/1980 | CA1070282A1 Retroreflective sheeting with retroreflective markings |
| 01/15/1980 | US4183695 Collapsible barricade |
| 01/15/1980 | US4183317 Versatile all purpose barricade structures |
| 01/08/1980 | US4182548 Retroreflective marking tape |
| 01/08/1980 | CA1069480A1 Depressible reflector road stud |
| 12/12/1979 | EP0005957A2 Ground-based portable and collapsible structures |
| 11/13/1979 | US4174184 Snowplowable pavement marker and method and apparatus for installing same |
| 11/13/1979 | CA1066016A1 Self-erecting highway guide post |
| 11/01/1979 | WO1979000849A1 Protective device for a ground-deposited light |
| 10/31/1979 | EP0005065A2 Yieldable upright assembly |
| 10/23/1979 | US4171919 Connection which will disconnect under predetermined force |
| 10/23/1979 | CA1064750A1 Method and machine for forming traffic regulating lines on road surfaces |
| 10/18/1979 | WO1979000809A1 A reflection device for roadside marking |
| 10/09/1979 | CA1063995A1 Visible markers for road surfaces |
| 10/02/1979 | CA1063570A1 Light reflector structure |
| 09/18/1979 | CA1062677A1 Portable telescopic warning lamp |
| 09/11/1979 | CA1062220A1 Impact resistant explosion proof lamp comprising encapsulated light source |
| 08/28/1979 | CA1061192A1 Retractable safety speed bump |
| 08/23/1979 | WO1979000559A1 Improvements in limit marking units |
| 07/17/1979 | US4161723 Flagpole particularly for indicating goals in skiing competitions |
| 07/17/1979 | CA1058589A1 Portable traffic barricade with warning signal lamp |
| 07/12/1979 | WO1979000391A1 Post mounting |
| 07/10/1979 | US4160761 Plastic articles |
| 07/10/1979 | CA1058131A1 Prefabricated roadway marking strip material and method for producing same |
| 06/28/1979 | WO1979000369A1 Method and device for measuring or detecting a mechanical change of state or its time derivative |
| 06/05/1979 | US4157210 Traffic channeling device |
| 05/22/1979 | US4155666 Snowplowable pavement marker and base member therefor |
| 05/22/1979 | CA1054772A1 Breakaway coupling assembly with fracture-initiating washer |
| 05/16/1979 | EP0001964A1 Post readily yieldably deformable under vehicle impact |
| 05/15/1979 | US4154037 Pole support assembly |
| 05/08/1979 | US4152854 Foldable safety sign |
| 05/01/1979 | US4152046 Light reflecting delineator |
| 04/17/1979 | US4149341 Security gate |
| 04/03/1979 | US4147447 Snowplowable pavement marker and base member therefor |
| 03/27/1979 | US4146635 Multilayer |
| 03/27/1979 | CA1051404A1 Roadway markers |
| 03/20/1979 | US4145152 Temporary highway reflector cover |
| 03/20/1979 | US4145112 Low-profile raised retroreflective sheeting |
| 03/06/1979 | US4142814 Parking area divider |
| 03/06/1979 | US4142343 Post apparatus and methods of constructing and utilizing same |
| 02/20/1979 | US4140418 Traffic indicator |
| 02/06/1979 | US4137662 Deflectable parking space reservation indicator |
| 01/30/1979 | US4136991 Roadway marker and process of and application for producing the same |
| 01/30/1979 | US4136990 Highway marker |
| 01/24/1979 | EP0000370A1 Roadway/traffic delineator |
| 01/23/1979 | US4135839 Device to prevent vehicles from passing a temporarily speed-reduced part of a road with high speed |
| 01/16/1979 | CA1046227A1 Support assemblies for posts |
| 01/09/1979 | US4133125 Self-erecting sign post |
| 12/19/1978 | US4130370 Light-reflective road marker of self-cleaning type |
| 12/12/1978 | US4129673 Snowplowing resisting road surface marking tape material |
| 12/12/1978 | US4129397 Road surface marking prefabricated tape material, having retroreflective composite elements associated thereto |
| 12/12/1978 | CA1044062A1 Anti-skid wear and stress resisting road marking tape material |
| 12/05/1978 | CA1043611A1 Gutter attachment for asphalt spreader |
| 11/28/1978 | US4127348 Road studs |
| 11/28/1978 | US4127346 Universal traffic control marker |
| 11/21/1978 | US4126403 Post construction |
| 11/07/1978 | US4124197 Safety traffic barrier |
| 10/31/1978 | US4123183 Guidepost for roadways and the like |
| 10/31/1978 | US4123181 Roadside barrier marker system |
| 10/31/1978 | US4122795 Elastic street delineator |
| 10/17/1978 | US4120384 Shopping cart braking apparatus |
| 10/17/1978 | US4120125 Post support |
| 09/26/1978 | US4117455 Self-righting roadway marking device |
| 09/26/1978 | US4117192 Glass microspheres embedded in polymeric support |
| 09/05/1978 | US4112485 Impact resistant explosion proof lamp comprising encapsulated light source |
| 09/05/1978 | US4111581 Highway marker |
| 08/22/1978 | US4108536 Retroreflective roadway surface marking tape material |
| 08/22/1978 | CA1036833A1 Infrared gas analysis |
| 08/15/1978 | US4106879 Knockover roadway marker post |
| 08/15/1978 | CA1036313A1 Reusable yielding post supports |
| 08/15/1978 | CA1036312A1 Boundary marker |
| 08/08/1978 | US4105350 Safety flexure for articulated channel-shaped roadway posts |
| 07/25/1978 | US4102718 Method and devices for applying tape marking material on road surfaces |
| 05/30/1978 | US4092081 Roadway/traffic delineator |
| 05/23/1978 | US4090465 Traffic control director |
| 05/09/1978 | US4088804 Cementitious coatings and method |
| 05/09/1978 | US4088416 Road studs |
| 05/09/1978 | US4088415 Glare screen blade |
| 05/02/1978 | US4087785 Portable display equipment |
| 04/25/1978 | US4086198 Composition for hot melt-type white traffic paint |
| 04/18/1978 | US4084914 Self-erecting highway guide post |
| 04/18/1978 | US4084339 Illuminated display apparatus |
| 04/04/1978 | US4083033 Traffic control element |
| 04/04/1978 | US4082587 Method and devices for road surface marking |
| 04/04/1978 | US4082426 Retroreflective sheeting with retroreflective markings |
| 03/28/1978 | US4080681 Bridge |