Patent US170544A successfully refreshed from Google Patents.
US170544A
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US
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Improvement in baby-walkers
Assignee: —
•
Filing: —
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Granted: 1875-11-30
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Expires: 1892-11-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:59
CPC Classifications
A; A47; A47D; A47D1/00; A47D1/006; A61; A61H; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1628; A61H2201/1633
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) | 1878-11-29 | 1879-05-31 | 1879-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-11-29 | 1883-05-31 | 1883-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-11-29 | 1887-05-31 | 1887-11-30 | $7700.00 | Window Closed / Lapsed |