Inventor
Robert Harper
Inventor
Concord, MA, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps64%
Y10TTechnical subjects covered by former us classification27%
B65BMachines, apparatus or devices for, or methods of, packaging articles or materials9%
PatentTitleYear
5,794,410'Method and apparatus for wrapping spherical objects'19984,851,736'Helical waveguide to rectangular waveguide coupler'19894,807,355'Method of manufacture of coupled-cavity waveguide structure for traveling wave tubes'19894,765,056'Method of manufacture of helical waveguide structure for traveling wave tubes'19884,282,457'Backward wave suppressor'19814,278,914'Diamond supported helix assembly and method'19814,156,163'Coupled cavity structure'19793,949,263'Diamond brazing method for slow wave energy propagating structures'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1989Patents assigned to RAYTHEON CO (6)· patent assignee history
1976–1989Based in Concord, MA, US· patent location history
1981Patents assigned to US NAVY (1)· patent assignee history
1998Based in West Midlands, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RAYTHEON CO | 6 | 1976–1989 |
| US NAVY | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Concord, Massachusetts, US | 7 | 1976–1989 |
| West Midlands, GB | 1 | 1998 |