Patent US396503A successfully refreshed from Google Patents.
US396503A
Expired / Lapsed
US
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Check-valve and trap
Assignee: —
•
Filing: —
•
Granted: 1889-01-22
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Expires: 1906-01-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:56
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K27/00; F16K27/02; F16K27/0209; F16K27/0227; F16K27/0232; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/79; Y10T137/7901; Y10T137/7903; Y10T137/8593; Y10T137/86292; Y10T137/863
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) | 1892-01-22 | 1892-07-23 | 1893-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1896-01-22 | 1896-07-23 | 1897-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1900-01-22 | 1900-07-24 | 1901-01-23 | $7700.00 | Window Closed / Lapsed |