Patent US977237A successfully refreshed from Google Patents.
US977237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing-machine for the use of the blind.
Assignee: Individual
•
Filing: 1909-08-12
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Granted: 1910-11-29
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Expires: 1929-08-12
Abstract
No abstract record available.
Inventors
- 👤 Albert Swindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:46
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/32
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) | 1913-11-28 | 1914-05-30 | 1914-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-11-28 | 1918-05-30 | 1918-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-11-28 | 1922-05-30 | 1922-11-29 | $7700.00 | Window Closed / Lapsed |