Patent US509866A successfully refreshed from Google Patents.
US509866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Albert bradford
Assignee: —
•
Filing: —
•
Granted: 1893-12-05
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Expires: 1910-12-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:46
CPC Classifications
F; F03; F03D; F03D3/00; B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; B63H1/22; B63H1/24; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/088; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
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) | 1896-12-04 | 1897-06-05 | 1897-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-12-05 | 1901-06-06 | 1901-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-12-05 | 1905-06-06 | 1905-12-06 | $7700.00 | Window Closed / Lapsed |