US862143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow-off cock for steam-boilers.
Assignee: Individual
•
Filing: 1906-11-24
•
Granted: 1907-08-06
•
Expires: 1926-11-24
Abstract
No abstract record available.
Inventors
- 👤 John B Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/16; F16K5/162; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8013
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) | 1910-08-05 | 1911-02-04 | 1911-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-08-05 | 1915-02-04 | 1915-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-08-05 | 1919-02-04 | 1919-08-06 | $7700.00 | Window Closed / Lapsed |