US1582664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable blackboard renovator
Assignee: Individual
•
Filing: 1925-04-15
•
Granted: 1926-04-27
•
Expires: 1945-04-15
Abstract
No abstract record available.
Inventors
- 👤 Albert P Bennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:27
CPC Classifications
B; B43; B43L; B43L21/00; B43L21/02; B24; B24B; B24B27/00; B24B27/027
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) | 1929-04-26 | 1929-10-26 | 1930-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-04-26 | 1933-10-26 | 1934-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-04-26 | 1937-10-26 | 1938-04-27 | $7700.00 | Window Closed / Lapsed |