US1788658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter eraser
Assignee: Individual
•
Filing: 1929-05-15
•
Granted: 1931-01-13
•
Expires: 1949-05-15
Abstract
No abstract record available.
Inventors
- 👤 Chris C Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:37
CPC Classifications
B; B43; B43L; B43L19/00; B43L19/0006; B43L19/0012
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) | 1934-01-12 | 1934-07-14 | 1935-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-12 | 1938-07-14 | 1939-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-12 | 1942-07-14 | 1943-01-13 | $7700.00 | Window Closed / Lapsed |