Pettigrew; Robert M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pettigrew; Robert M..The latest application filed is for "position detector".
- Pettigrew; Robert M. - Cambridgeshire GB
- Pettigrew; Robert M. - Harston GB
- Pettigrew, Robert M. - Ickleton GB
- Pettigrew; Robert M. - Foxton GB
- Pettigrew; Robert M. - Cambridge GB2
| Patent | Date |
|---|---|
| Position detector Grant 7,030,782 - Ely , et al. April 18, 2 | 2006-04-18 |
| Position detector App 20040169594 - Ely, David T.E. ; et al. | 2004-09-02 |
| Signalling system Grant 6,624,916 - Green , et al. September 23, 2 | 2003-09-23 |
| Position detector App 20030062889 - Ely, David T.E. ; et al. | 2003-04-03 |
| Position detector Grant 6,489,899 - Ely , et al. December 3, 2 | 2002-12-03 |
| Optical free space signalling system App 20020141011 - Green, Alan E. ; et al. | 2002-10-03 |
| Position detector Grant 6,249,234 - Ely , et al. June 19, 2 | 2001-06-19 |
| Printing systems Grant 5,160,943 - Pettigrew , et al. November 3, 1 | 1992-11-03 |
| Printers and ancillary systems Grant 5,149,211 - Pettigrew , et al. September 22, 1 | 1992-09-22 |
| Optical assay technique Grant 5,118,608 - Layton , et al. * June 2, 1 | 1992-06-02 |
| Magnetic devices Grant 4,960,651 - Pettigrew , et al. October 2, 1 | 1990-10-02 |
| Article detection and/or recognition using magnetic devices Grant 4,940,966 - Pettigrew , et al. July 10, 1 | 1990-07-10 |
| Optical assay technique Grant 4,931,384 - Layton , et al. June 5, 1 | 1990-06-05 |
| Optical data storage medium Grant 4,928,132 - Pettigrew , et al. * May 22, 1 | 1990-05-22 |
| Displacement measuring apparatus and method Grant 4,776,701 - Pettigrew October 11, 1 | 1988-10-11 |
| Data storage medium Grant 4,724,444 - Pettigrew , et al. February 9, 1 | 1988-02-09 |
| Manufacture of diffraction gratings Grant 4,657,780 - Pettigrew , et al. April 14, 1 | 1987-04-14 |
| Data storage medium Grant 4,616,237 - Pettigrew , et al. October 7, 1 | 1986-10-07 |
| Zoom lens for cameras Grant 4,541,695 - Wainwright , et al. September 17, 1 | 1985-09-17 |
| Information storage and retrieval Grant 4,522,482 - Pettigrew , et al. June 11, 1 | 1985-06-11 |
| Optical data storage Grant 4,486,870 - Pettigrew , et al. December 4, 1 | 1984-12-04 |
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