1 row is stored for this page
| Field | Field type | Value |
|---|
| _creationDate | Datetime | 2021-08-31 11:04:13 AM |
| _modificationDate | Datetime | 2021-08-31 11:04:13 AM |
| _categories | List of String, delimiter: | | Patents |
| _isRedirect | Boolean | No |
| _pageID | Integer | 27,501 |
| _pageName | Page | Patent US 3809899A |
| _pageTitle | String | Patent US 3809899A
|
| _pageNamespace | Integer | 0 |
1 row is stored for this page
| Field | Field type | Value |
|---|
| Office | String | US |
| Number | String | 3809899A |
| Title | String | Electron-beam tube including a thermionic-field emission cathode for a scanning electron microscope |
| Inventors | List of Page, delimiter: ; | T Baker • M Balsiger • K Considine • H Litsjo |
| Company | List of Page, delimiter: ; | Tektronix Inc |
| Filing_date | Date | 1972-08-17 |
| Grant_date | Date | 1974-05-07 |
| Cites | List of Page, delimiter: ; | |
| Links | List of Page, delimiter: ; | |