US2883029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter ribbon attachment
Assignee: ALESSANDRA GRAY
•
Filing: 1957-02-25
•
Granted: 1959-04-21
•
Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 James A Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:33
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/04; B41J35/06; B41J32/00; B41J33/00; B41J33/14; B41J33/40; B41J33/44; B41J33/51; B41J33/516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822993A
Cited
US2069492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |