Patent US3021865A successfully refreshed from Google Patents.
US3021865A
Expired / Lapsed
US
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Pressure regulator
Assignee: Individual
•
Filing: 1959-10-26
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Granted: 1962-02-20
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Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph K Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/163; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/5109; Y10T137/5196; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE495177C
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US1814530A
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US1724891A
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US1761000A
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US2059121A
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US2196279A
Cited
US2408685A
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US2628499A
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US2881786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |