Patent US639769A successfully refreshed from Google Patents.
US639769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter.
Assignee: GEORGE W CLEVELAND
•
Filing: 1898-09-08
•
Granted: 1899-12-26
•
Expires: 1918-09-08
Abstract
No abstract record available.
Inventors
- 👤 George Raab
- 👤 Lorenz S Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:58
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/114
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1902-12-26 | 1903-06-27 | 1903-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-12-26 | 1907-06-27 | 1907-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-12-26 | 1911-06-27 | 1911-12-27 | $7700.00 | Window Closed / Lapsed |