Patent US169709A successfully refreshed from Google Patents.
US169709A
Expired / Lapsed
US
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Improvement in toy building-blocks
Assignee: —
•
Filing: —
•
Granted: 1875-11-09
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Expires: 1892-11-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:17
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/08; A63H33/084; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/167
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) | 1878-11-08 | 1879-05-10 | 1879-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-11-08 | 1883-05-10 | 1883-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-11-08 | 1887-05-10 | 1887-11-09 | $7700.00 | Window Closed / Lapsed |