US1250971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy building-block.
Assignee: Individual
•
Filing: 1916-03-29
•
Granted: 1917-12-25
•
Expires: 1936-03-29
Abstract
No abstract record available.
Inventors
- 👤 Atherton D Converse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; F27D1/08; E; E04; E04C; E04C1/00; E04C1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-12-24 | 1921-06-25 | 1921-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-24 | 1925-06-25 | 1925-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-24 | 1929-06-25 | 1929-12-25 | $7700.00 | Window Closed / Lapsed |