Patent US2885793A successfully refreshed from Google Patents.
US2885793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational mechanical building toy
Assignee: Individual
•
Filing: 1955-04-14
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Granted: 1959-05-12
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Nels E Oback
- 👤 Leonard G Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:07
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/10; A63H33/12; G; G09; G09B; G09B25/00; G09B25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |