US2461535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy building blocks with closure panes
Assignee: AC Gilbert Co
•
Filing: 1944-01-24
•
Granted: 1949-02-15
•
Expires: 1964-01-24
Abstract
No abstract record available.
Inventors
- 👤 Oscar P Erhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:53
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/08; A63H33/088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US233780A
Cited
US312420A
Cited
US725032A
Cited
US729918A
Cited
US769171A
Cited
US1207504A
Cited
US1286462A
Cited
US1403196A
Cited
GB254462A
Cited
GB403228A
Cited
US2013771A
Cited
FR806957A
Cited
US2293424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |