US157753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in opera-chairs
Assignee: —
•
Filing: —
•
Granted: 1874-12-15
•
Expires: 1891-12-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:57
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/30; B60N2/3002; B60N2/3004; B60N2/3009; B60N2/3011
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) | 1877-12-14 | 1878-06-15 | 1878-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-12-14 | 1882-06-15 | 1882-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-12-14 | 1886-06-15 | 1886-12-15 | $7700.00 | Window Closed / Lapsed |