US387008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolving valve
Assignee: —
•
Filing: —
•
Granted: 1888-07-31
•
Expires: 1905-07-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1518; Y10T74/1523; Y10T74/1558; Y10T74/1577
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) | 1891-07-31 | 1892-01-30 | 1892-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1895-07-31 | 1896-01-30 | 1896-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1899-07-31 | 1900-01-30 | 1900-08-01 | $7700.00 | Window Closed / Lapsed |