Patent US3409049A successfully refreshed from Google Patents.
US3409049A
Expired / Lapsed
US
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Throttle device for gases
Assignee: Individual
•
Filing: 1965-09-03
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Granted: 1968-11-05
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Expires: 1985-09-03
Abstract
No abstract record available.
Inventors
- 👤 Alfred Racek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:12
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/08; F16K47/14; F23; F23Q; F23Q2/00; F23Q2/16; F23Q2/173; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2635641A
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US2657712A
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Cited
US2722942A
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US2857927A
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US3241804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |