US446549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk-carbon holder for electric lamps
Assignee: —
•
Filing: —
•
Granted: 1891-02-17
•
Expires: 1908-02-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:34
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23B31/4006; B23B31/4033; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1004; Y10T279/1012; Y10T279/1037; Y10T279/1041; Y10T279/1045; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7058
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) | 1894-02-16 | 1894-08-18 | 1895-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-02-16 | 1898-08-18 | 1899-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-02-17 | 1902-08-19 | 1903-02-18 | $7700.00 | Window Closed / Lapsed |