US951508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator for chimneys or flues.
Assignee: Individual
•
Filing: 1909-11-18
•
Granted: 1910-03-08
•
Expires: 1929-11-18
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Millman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:22
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/02; F23L17/10
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) | 1913-03-07 | 1913-09-06 | 1914-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-03-07 | 1917-09-06 | 1918-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-03-07 | 1921-09-06 | 1922-03-08 | $7700.00 | Window Closed / Lapsed |