US394680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for incandescent electric lights
Assignee: —
•
Filing: 1887-12-07
•
Granted: 1888-12-18
•
Expires: 1907-12-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:40
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/14; F21V21/26; F21V21/28; F21V21/29; F21S; F21S8/00; F21S8/04; F21S8/06; F21V21/02; F21V21/03; F21V27/00; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32681; Y10T403/32704; Y10T403/32737; Y10T403/32762
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) | 1891-12-18 | 1892-06-18 | 1892-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1895-12-18 | 1896-06-18 | 1896-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1899-12-18 | 1900-06-19 | 1900-12-19 | $7700.00 | Window Closed / Lapsed |