Patent US623478A successfully refreshed from Google Patents.
US623478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
keene
Assignee: —
•
Filing: —
•
Granted: 1899-04-18
•
Expires: 1916-04-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:51
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/033; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
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) | 1902-04-18 | 1902-10-18 | 1903-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-04-18 | 1906-10-18 | 1907-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-04-18 | 1910-10-18 | 1911-04-19 | $7700.00 | Window Closed / Lapsed |