US544390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chimney-cowl
Assignee: —
•
Filing: —
•
Granted: 1895-08-13
•
Expires: 1912-08-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/085; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20672
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) | 1898-08-12 | 1899-02-11 | 1899-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-08-13 | 1903-02-12 | 1903-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-08-13 | 1907-02-12 | 1907-08-14 | $7700.00 | Window Closed / Lapsed |