Patent US3429508A successfully refreshed from Google Patents.
US3429508A
Expired / Lapsed
US
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Fluid selection system
Assignee: GRAY CO Inc
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Filing: 1966-08-25
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Granted: 1969-02-25
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Expires: 1986-08-25
Abstract
No abstract record available.
Inventors
- 👤 Michael R Russinik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:14
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B08B3/026; B08B3/028; B05; B05B; B05B1/00; B05B1/14; B05B1/16; B05B1/1627; B05B1/1636; B05B1/1645; B05B12/00; B05B12/14; B05B12/1418; B05B15/00; B05B15/50; B05B15/58; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32; B08B2203/00; B08B2203/02; B08B2203/0205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |