US549479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding scale-preventive compounds to boilers
Assignee: —
•
Filing: —
•
Granted: 1895-11-05
•
Expires: 1912-11-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
F; F16; F16K; F16K37/00; F16K37/0058; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359; Y10T137/8593; Y10T137/8597
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) | 1898-11-04 | 1899-05-06 | 1899-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-11-05 | 1903-05-07 | 1903-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-11-05 | 1907-05-07 | 1907-11-06 | $7700.00 | Window Closed / Lapsed |