Patent US4191465A successfully refreshed from Google Patents.
US247229A
Expired / Lapsed
US
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Apparatus for lighting dwellings or other structures
Assignee: —
•
Filing: 1880-12-10
•
Granted: 1881-09-20
•
Expires: 1900-12-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0096; G02B6/0005; G02B6/0006
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) | 1884-09-19 | 1885-03-21 | 1885-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-09-19 | 1889-03-21 | 1889-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-09-19 | 1893-03-21 | 1893-09-20 | $7700.00 | Window Closed / Lapsed |