US636489A
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Assignee: Individual
•
Filing: 1898-07-05
•
Granted: 1899-11-07
•
Expires: 1918-07-05
Abstract
No abstract record available.
Inventors
- 👤 William M Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:12
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/50; B01D29/56
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) | 1902-11-07 | 1903-05-09 | 1903-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-11-07 | 1907-05-09 | 1907-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-11-07 | 1911-05-09 | 1911-11-08 | $7700.00 | Window Closed / Lapsed |