US671338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductor and contact for electrical glow-lamps.
Assignee: ELECTRIC LIGHTING BOARDS Ltd
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Filing: 1900-09-10
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Granted: 1901-04-02
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Expires: 1920-09-10
Abstract
No abstract record available.
Inventors
- 👤 Julian A Halford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/28; F; F21; F21V; F21V21/00; F21V21/002; H; H01; H01R; H01R4/00; H01R4/24; H01R4/2404; H01R4/2406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1904-04-01 | 1904-10-01 | 1905-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-04-01 | 1908-10-01 | 1909-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-04-01 | 1912-10-01 | 1913-04-02 | $7700.00 | Window Closed / Lapsed |