Patent US2957251A successfully refreshed from Google Patents.
US2957251A
Expired / Lapsed
US
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Educational jigsaw globe puzzles
Assignee: Individual
•
Filing: 1958-12-24
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Granted: 1960-10-25
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Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Nystad Ruth
- 👤 Nystad Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:49
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; G; G09; G09B; G09B27/00; G09B27/08; A63F3/00; A63F3/04; A63F3/0434; A63F2003/0439; A63F2003/0444; A63F9/10; A63F2009/1094; A63F2009/124
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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |