US660764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen-plate for straining paper-pulp.
Assignee: Individual
•
Filing: 1900-03-20
•
Granted: 1900-10-30
•
Expires: 1920-03-20
Abstract
No abstract record available.
Inventors
- 👤 Edward J Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:56
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/469
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) | 1903-10-30 | 1904-04-30 | 1904-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-10-30 | 1908-04-30 | 1908-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-10-30 | 1912-04-30 | 1912-10-30 | $7700.00 | Window Closed / Lapsed |