Allen E. Armstrong

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Lexington, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Bicycle brake with force modifying means
- Patent number 4,015,690
- Issue date Apr 5, 1977
- Allen E. Armstrong
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Variable-leverage brakes for bicycles
- Patent number 4,014,408
- Issue date Mar 29, 1977
- Allen E. Armstrong
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Bicycle shift mechanism
- Patent number 3,972,247
- Issue date Aug 3, 1976
- Allen E. Armstrong
- G05 - CONTROLLING REGULATING