Patent US4404241A successfully refreshed from Google Patents.
Patent US3459213A successfully refreshed from Google Patents.
US3459213A
Expired / Lapsed
US
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Coated hollow plug valve
Assignee: Flowserve Corp
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Filing: 1965-10-19
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Granted: 1969-08-05
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Robert C Schenck Jr
- 👤 Herbert C Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:39
CPC Classifications
B; B29; B29B; B29B11/00; B29B11/06; B29B11/12; B29C; B29C43/00; B29C43/006; B29C43/02; B29C43/027; B29C43/10; B29C43/12; B29C43/18; B29C43/32; B29C43/36; B29C43/3642; B29C70/00; B29C70/68; B29C70/72; F; F16; F16K; F16K27/00; F16K27/06; F16K27/062; F16K5/00; F16K5/02; F16K5/025; B29C2949/00; B29C2949/07; B29C2949/081; B29C2949/082; B29C2949/0829; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/25; B29K2105/251; B29K2105/253; B29L; B29L2023/00; B29L2023/22; B29L2031/00; B29L2031/748; B29L2031/7506; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA566811A
Cited
US2204724A
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US2807511A
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CH326610A
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US3015855A
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US3157195A
Cited
US3235636A
Cited
US3227174A
Cited
US3235637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |