Howland; Bradford
Patent Applications and Registrations
Patent applications and USPTO patent grants for Howland; Bradford.The latest application filed is for "test patterns for lens evaluation".
- Howland; Bradford - Cambridge MA
| Patent | Date |
|---|---|
| Test patterns for lens evaluation Grant 4,274,737 - Howland June 23, 1 | 1981-06-23 |
| Eye testing chart Grant 4,257,690 - Howland March 24, 1 | 1981-03-24 |
| Efficient light diffuser Grant 4,140,369 - Howland February 20, 1 | 1979-02-20 |
| Fiber optic displacement measuring apparatus Grant 3,940,608 - Kissinger , et al. February 24, 1 | 1976-02-24 |
| Photo-refractometer And Methods For Ophthalmic Testing Of Young Children Grant 3,879,113 - Howland , et al. April 22, 1 | 1975-04-22 |
| Method And Apparatus For Determining Optical Focal Distance Grant 3,619,067 - Howland , et al. November 9, 1 | 1971-11-09 |
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