Patent US607441A successfully refreshed from Google Patents.
US607441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iiugo kohl
Assignee: —
•
Filing: —
•
Granted: 1898-07-19
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Expires: 1915-07-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:29
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; Y; Y10; Y10S; Y10S55/00; Y10S55/20; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86566
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) | 1901-07-19 | 1902-01-18 | 1902-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1905-07-19 | 1906-01-18 | 1906-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1909-07-19 | 1910-01-18 | 1910-07-20 | $7700.00 | Window Closed / Lapsed |