US3450824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing and directing an electron beam
Assignee: Airco Inc
•
Filing: 1967-05-22
•
Granted: 1969-06-17
•
Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Charles W Hanks
- 👤 Howard R Harker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/305; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28; C23C14/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3303320A
Cited
US3371206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |