US2609530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balance controls for metal detectors
Assignee: RCA Corp
•
Filing: 1949-05-05
•
Granted: 1952-09-02
•
Expires: 1969-05-05
Abstract
No abstract record available.
Inventors
- 👤 Donald J Tricebock
- 👤 Raymond A York
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:49
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/08; G01V3/10; G01V3/104; G01V3/105; G01V3/107; H; H01; H01F; H01F21/00; H01F21/02; H01F21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969819A
Cited
US1940769A
Cited
US1954470A
Cited
US2145742A
Cited
US2237254A
Cited
US2321356A
Cited
US2513745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |