US2477653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary electrical training test board apparatus
Assignee: W H REISNER Manufacturing Co
•
Filing: 1943-08-10
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Granted: 1949-08-02
•
Expires: 1963-08-10
Abstract
No abstract record available.
Inventors
- 👤 Arden E Roane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:13
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/06; G09B23/18; G09B23/183; G09B23/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US441130A
Cited
US782311A
Cited
US1073670A
Cited
GB179081A
Cited
GB202983A
Cited
US1690118A
Cited
US1769536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |