US2845941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate valve for rotary units
Assignee: Individual
•
Filing: 1955-02-25
•
Granted: 1958-08-05
•
Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:49
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0743; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0055; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4372; Y10T137/4449; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86726; Y10T137/86815; Y10T137/86823
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US951278A
Cited
GB402502A
Cited
US2288768A
Cited
US2449297A
Cited
US2608158A
Cited
US2608933A
Cited
US2577242A
Cited
US2633104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |