Patent US3496010A successfully refreshed from Google Patents.
Patent US32572A successfully refreshed from Google Patents.
US32572A
Expired / Lapsed
US
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Safety-guard for steam-boilers
Assignee: —
•
Filing: —
•
Granted: 1861-06-18
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Expires: 1878-06-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:03
CPC Classifications
F; F16; F16K; F16K13/00; F16K13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1639; Y10T137/1692; Y10T137/1797; Y10T137/1812; Y10T137/8158; Y10T137/8326; Y10T137/8593; Y10T137/87917; Y10T137/88046
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) | 1864-06-17 | 1864-12-17 | 1865-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1868-06-17 | 1868-12-17 | 1869-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1872-06-17 | 1872-12-17 | 1873-06-18 | $7700.00 | Window Closed / Lapsed |