US1293023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper-holder for the use of the blind.
Assignee: PERKINS INSTITUTION AND MASSACHUSETTS SCHOOL FOR BLIND
•
Filing: 1918-05-04
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Granted: 1919-02-04
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Expires: 1938-05-04
Abstract
No abstract record available.
Inventors
- 👤 Frank C Bryan
- 👤 Carl M Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:45
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/02; B44B5/026
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) | 1922-02-03 | 1922-08-05 | 1923-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-02-03 | 1926-08-05 | 1927-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-02-03 | 1930-08-05 | 1931-02-04 | $7700.00 | Window Closed / Lapsed |