US2622192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring system with grid current suppressor
Assignee: Leeds and Northrup Co
•
Filing: 1949-01-06
•
Granted: 1952-12-16
•
Expires: 1969-01-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Tarpley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:21
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/38; H03F3/40; G; G01; G01R; G01R1/00; G01R1/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2219729A
Cited
US2297543A
Cited
US2229702A
Cited
US2372062A
Cited
US2367746A
Cited
US2459730A
Cited
US2485948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |