Patent US3215470A successfully refreshed from Google Patents.
US587704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for air or gas compressors
Assignee: —
•
Filing: —
•
Granted: 1897-08-10
•
Expires: 1914-08-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:09
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/08; F16K15/12; F16K15/06; F16K15/063; F16K2200/00; F16K2200/30; F16K2200/302; Y; Y10; Y10S; Y10S137/00; Y10S137/904; Y10S137/906; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7861; Y10T137/7862; Y10T137/7865; Y10T137/7904; Y10T137/7905; Y10T137/7922; Y10T137/7929; Y10T137/7935
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1900-08-10 | 1901-02-09 | 1901-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-08-10 | 1905-02-09 | 1905-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-08-10 | 1909-02-09 | 1909-08-11 | $7700.00 | Window Closed / Lapsed |