US3021859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm construction
Assignee: Curtiss Wright Corp
•
Filing: 1956-03-23
•
Granted: 1962-02-20
•
Expires: 1976-03-23
Abstract
No abstract record available.
Inventors
- 👤 Liantonio Vito
- 👤 John B Minnich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:22
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/02; G; G05; G05D; G05D11/00; G05D11/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2524; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US962111A
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US1948044A
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US2207840A
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US2623083A
Cited
GB599012A
Cited
GB588585A
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US2472056A
Cited
US2643664A
Cited
US2772065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |