Patent US2444666A successfully refreshed from Google Patents.
US521718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ments
Assignee: —
•
Filing: —
•
Granted: 1894-06-19
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Expires: 1911-06-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:43
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/08; F24C3/085; F24C3/087; A; A47; A47J; A47J37/00; A47J37/06; A47J37/0688
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) | 1897-06-18 | 1897-12-18 | 1898-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1901-06-19 | 1901-12-19 | 1902-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1905-06-19 | 1905-12-19 | 1906-06-20 | $7700.00 | Window Closed / Lapsed |