Patent US3002528A successfully refreshed from Google Patents.
US3002528A
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Assignee: DYNEX Inc
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Filing: 1959-05-18
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Granted: 1961-10-03
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Expires: 1979-05-18
Abstract
No abstract record available.
Inventors
- 👤 William R Leissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:24
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F04; F04B; F04B53/00; F04B53/10; F04B53/1002; F04B53/1015; F04B53/12; F04B53/125; F04B53/126; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/7929; Y10T137/7937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1796455A
Cited
US1901217A
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US2622615A
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US2707965A
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US2792789A
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US2912001A
Cited
US2941475A
Cited
US2949931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |