Patent US924562A successfully refreshed from Google Patents.
Patent US575933A successfully refreshed from Google Patents.
US575933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator for steam-boilers
Assignee: —
•
Filing: —
•
Granted: 1897-01-26
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Expires: 1914-01-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:38
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/34; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3143; Y10T137/7287; Y10T137/7358; Y10T137/7407
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) | 1900-01-26 | 1900-07-28 | 1901-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-01-27 | 1904-07-28 | 1905-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-01-27 | 1908-07-28 | 1909-01-27 | $7700.00 | Window Closed / Lapsed |