US2655737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abacus
Assignee: DAINTEE TOYS Inc
•
Filing: 1952-03-28
•
Granted: 1953-10-20
•
Expires: 1972-03-28
Abstract
No abstract record available.
Inventors
- 👤 Dero Sylvester F Don
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:58
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US452302A
Cited
US532282A
Cited
US541787A
Cited
US604963A
Cited
GB190712314A
Cited
CH123004A
Cited
US2457332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |