US2423194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the dwell and frequency of electrical impulses
Assignee: CG Conn Ltd
•
Filing: 1943-04-16
•
Granted: 1947-07-01
•
Expires: 1963-04-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:39
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1526337A
Cited
US1577046A
Cited
US1830170A
Cited
US1933274A
Cited
US1916764A
Cited
US2012837A
Cited
US2114016A
Cited
US2177569A
Cited
US2162239A
Cited
US2176742A
Cited
US2250708A
Cited
US2137859A
Cited
US2218642A
Cited
US2228883A
Cited
US2184877A
Cited
US2285482A
Cited
US2217477A
Cited
US2216730A
Cited
US2243725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |