US890342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blackboard-eraser.
Assignee: Individual
•
Filing: 1907-06-28
•
Granted: 1908-06-09
•
Expires: 1927-06-28
Abstract
No abstract record available.
Inventors
- 👤 Edward P Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:28
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164; B; B43; B43L; B43L21/00; B43L21/02
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) | 1911-06-09 | 1911-12-09 | 1912-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-06-09 | 1915-12-09 | 1916-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-06-09 | 1919-12-09 | 1920-06-09 | $7700.00 | Window Closed / Lapsed |