US409553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety-nut for valves
Assignee: —
•
Filing: —
•
Granted: 1889-08-20
•
Expires: 1906-08-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/065; F16K15/067; F16K2200/00; F16K2200/30; F16K2200/304; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
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) | 1892-08-19 | 1893-02-18 | 1893-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1896-08-19 | 1897-02-18 | 1897-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1900-08-20 | 1901-02-19 | 1901-08-21 | $7700.00 | Window Closed / Lapsed |