Patent US3485371A successfully refreshed from Google Patents.
US3485371A
Expired / Lapsed
US
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Valve assembly
Assignee: Lawler Automatic Controls Inc
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Filing: 1968-01-05
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Granted: 1969-12-23
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Expires: 1988-01-05
Abstract
No abstract record available.
Inventors
- 👤 Adelmo Costantini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:02
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/04; B01D35/046; F; F16; F16K; F16K15/00; F16K15/02; F16K15/025; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US538502A
Cited
US888817A
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US1220231A
Cited
GB227215A
Cited
US2344354A
Cited
US3273715A
Cited
US3363762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |