US2440205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy block
Assignee: Kusan Inc
•
Filing: 1946-05-21
•
Granted: 1948-04-20
•
Expires: 1966-05-21
Abstract
No abstract record available.
Inventors
- 👤 William R Mclain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:03
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312420A
Cited
US1465637A
Cited
US1449755A
Cited
US1741692A
Cited
US1923522A
Cited
US2235801A
Cited
US2319162A
Cited
US2315793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |