US615881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined boiler check and blow-off cock
Assignee: —
•
Filing: —
•
Granted: 1898-12-13
•
Expires: 1915-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/24; Y; Y10; Y10S; Y10S137/00; Y10S137/904; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87764; Y10T137/87917
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) | 1901-12-13 | 1902-06-14 | 1902-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1905-12-13 | 1906-06-14 | 1906-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1909-12-13 | 1910-06-14 | 1910-12-14 | $7700.00 | Window Closed / Lapsed |