Patent US2858097A successfully refreshed from Google Patents.
US2858097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuating mechanism
Assignee: Stockham Valves and Fittings Inc
•
Filing: 1954-04-06
•
Granted: 1958-10-28
•
Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Carl A Blomstran
- 👤 William J Ehrensperger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:49
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/50; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US711216A
Cited
US1848369A
Cited
US1864596A
Cited
US2076838A
Cited
US2139632A
Cited
US2238385A
Cited
US2408223A
Cited
US2501150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |