US2313018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic electron lens
Assignee: Individual
•
Filing: 1940-12-02
•
Granted: 1943-03-02
•
Expires: 1960-12-02
Abstract
No abstract record available.
Inventors
- 👤 Krause Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:12
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/10; H01J37/12; H01J29/00; H01J29/46; H01J29/58; H01J29/62; H01J2237/00; H01J2237/10; H01J2237/12; H01J2237/1205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-03-01 | 1946-08-31 | 1947-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-01 | 1950-08-31 | 1951-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-01 | 1954-08-31 | 1955-03-02 | $7700.00 | Window Closed / Lapsed |