Patent US4381981A successfully refreshed from Google Patents.
US451202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspending device for electric lamps
Assignee: —
•
Filing: —
•
Granted: 1891-04-28
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Expires: 1908-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:06
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/16; A47G1/18; F; F21; F21V; F21V21/00; F21V21/14; F21V21/16; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3916; Y10T24/3927; Y10T24/3936; Y10T24/3969; Y10T24/3976; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17171; Y10T279/17188; Y10T279/17196; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052
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) | 1894-04-27 | 1894-10-27 | 1895-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-04-27 | 1898-10-27 | 1899-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-04-28 | 1902-10-28 | 1903-04-29 | $7700.00 | Window Closed / Lapsed |