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US3439701A
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Assignee: Individual
•
Filing: 1966-04-12
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Granted: 1969-04-22
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Expires: 1986-04-12
Abstract
No abstract record available.
Inventors
- 👤 Pietro Stella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:16
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K27/00; F16K27/02; F16K27/12; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/6977; Y10T137/7504; Y10T137/7613; Y10T137/7668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1988966A
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US2754840A
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US3010475A
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US3082786A
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US2980070A
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US3033323A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |