US2459174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Probe
Assignee: Individual
•
Filing: 1945-03-01
•
Granted: 1949-01-18
•
Expires: 1965-03-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Mcfarland
- 👤 Marguerite P Van Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:50
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1765958A
Cited
US2103179A
Cited
US2109189A
Cited
US2179257A
Cited
US2249166A
Cited
US2351604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |