Patent US2882008A successfully refreshed from Google Patents.
US2882008A
Expired / Lapsed
US
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Pneumatic valve construction
Assignee: Individual
•
Filing: 1955-07-06
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Granted: 1959-04-14
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Expires: 1975-07-06
Abstract
No abstract record available.
Inventors
- 👤 Louis F Giauque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:59
CPC Classifications
D; D21; D21G; D21G1/00; D21G1/02; D21G1/0253; D21G1/0266; F; F16; F16K; F16K31/00; F16K31/12; F16K31/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US680135A
Cited
US1253298A
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US1524054A
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US1786195A
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US1737933A
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US2249576A
Cited
US2355458A
Cited
US2559692A
Cited
US2491112A
Cited
US2672086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |