US2473985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductor
Assignee: SPRAGUE SPECIALTIES Co
•
Filing: 1944-02-18
•
Granted: 1949-06-21
•
Expires: 1964-02-18
Abstract
No abstract record available.
Inventors
- 👤 Lester A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/24; H01B3/30; H01B3/44; H01B3/442; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1982539A
Cited
US1896040A
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US2012301A
Cited
GB475951A
Cited
US2106850A
Cited
US2256160A
Cited
GB524156A
Cited
US2321896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |