Patent US3412754A successfully refreshed from Google Patents.
US3412754A
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Pyramid reed valve
Assignee: Textron Inc
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Filing: 1966-03-15
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Granted: 1968-11-26
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Expires: 1986-03-15
Abstract
No abstract record available.
Inventors
- 👤 Schou Chris
- 👤 Thomas F Pelagalli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:05
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/20; F01L3/205; F16; F16K; F16K15/00; F16K15/14; F16K15/1401; F16K15/16; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7668; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7879; Y10T137/7888; Y10T137/7891
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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |