Patent US2933285A successfully refreshed from Google Patents.
US2933285A
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US
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Packing arrangement for valves or the like
Assignee: Parker Hannifin Corp
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Filing: 1956-05-10
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Granted: 1960-04-19
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Expires: 1976-05-10
Abstract
No abstract record available.
Inventors
- 👤 Warren R Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K41/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87788; Y10T137/87829; Y10T137/87837
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704650A
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US2044590A
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US2349170A
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US2506111A
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US2542390A
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US2713989A
Cited
US2666614A
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US2723681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |