Patent US2564743A successfully refreshed from Google Patents.
US2564743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charged particle beam forming apparatus
Assignee: Unisys Corp
•
Filing: 1949-03-15
•
Granted: 1951-08-21
•
Expires: 1969-03-15
Abstract
No abstract record available.
Inventors
- 👤 Chao C Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:31
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/029
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
AU2210635A
Cited
US1979392A
Cited
US2064981A
Cited
US2176974A
Cited
US2194547A
Cited
US2268165A
Cited
US2268196A
Cited
US2303166A
Cited
US2318423A
Cited
US2443916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |