US1534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus of
Assignee: —
•
Filing: —
•
Granted: 1840-03-31
•
Expires: 1857-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:28
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0202; F28F9/0204; F28F9/0209; F28F9/0212; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394; Y10T24/3942
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) | 1843-03-31 | 1843-09-30 | 1844-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1847-03-31 | 1847-09-30 | 1848-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1851-03-31 | 1851-09-30 | 1852-03-31 | $7700.00 | Window Closed / Lapsed |