US2507590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam self-balancing measuring system
Assignee: Leeds and Northrup Co
•
Filing: 1946-05-09
•
Granted: 1950-05-16
•
Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Clark William Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:23
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; H; H03; H03F; H03F99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2357205A
Cited
US2374666A
Cited
US2357922A
Cited
US2441269A
Cited
US2394196A
Cited
US2465277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |