Patent US648144A successfully refreshed from Google Patents.
US648144A
Expired / Lapsed
US
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Electric-lighting apparatus.
Assignee: CHARLES M GOULD
•
Filing: 1899-11-20
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Granted: 1900-04-24
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Expires: 1919-11-20
Abstract
No abstract record available.
Inventors
- 👤 Rufus N Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:07
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/865; Y; Y10; Y10S; Y10S320/00; Y10S320/36
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) | 1903-04-24 | 1903-10-24 | 1904-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-04-24 | 1907-10-24 | 1908-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-04-24 | 1911-10-24 | 1912-04-24 | $7700.00 | Window Closed / Lapsed |