US872457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable stairway.
Assignee: Individual
•
Filing: 1902-02-15
•
Granted: 1907-12-03
•
Expires: 1922-02-15
Abstract
No abstract record available.
Inventors
- 👤 Howland Russel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
B; B66; B66B; B66B29/00; B66B29/08; B66B21/00; B66B21/02; B66B21/025; B66B23/00; B66B23/08; B66B23/12; B66B23/14
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) | 1910-12-02 | 1911-06-03 | 1911-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-12-02 | 1915-06-03 | 1915-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-12-02 | 1919-06-03 | 1919-12-03 | $7700.00 | Window Closed / Lapsed |