US557534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-alarm for gas-pipes
Assignee: —
•
Filing: —
•
Granted: 1896-04-07
•
Expires: 1913-04-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:38
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/24; F23N5/242; F21; F21K; F21K5/00; F21K5/02
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) | 1899-04-07 | 1899-10-07 | 1900-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1903-04-08 | 1903-10-08 | 1904-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1907-04-08 | 1907-10-08 | 1908-04-08 | $7700.00 | Window Closed / Lapsed |