US2855940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operating methods
Assignee: EDWARD VALVES Inc
•
Filing: 1955-09-13
•
Granted: 1958-10-14
•
Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 Bertram J Milleville
- 👤 Jr Eugene F Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:41
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/05; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20471E
Cited
US863180A
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US923526A
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US1181053A
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US1557525A
Cited
US1820686A
Cited
US1731314A
Cited
US2623618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |