Patent US2451613A successfully refreshed from Google Patents.
US2451613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductivity testing machine
Assignee: Remington Arms Co LLC
•
Filing: 1944-08-02
•
Granted: 1948-10-19
•
Expires: 1964-08-02
Abstract
No abstract record available.
Inventors
- 👤 Paul F Darby
- 👤 Lloyd A Nevala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:01
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/54; G01R31/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE21003E
Cited
US2020964A
Cited
US939109A
Cited
GB191226639A
Cited
US1895643A
Cited
US1832948A
Cited
US1915028A
Cited
US1944315A
Cited
US1917417A
Cited
US2029523A
Cited
US2167462A
Cited
US2237254A
Cited
US2218399A
Cited
US2232792A
Cited
US2348157A
Cited
US2371636A
Cited
US2320175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |