US3052253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for liquid metal
Assignee: Pirelli and C SpA
•
Filing: 1960-05-11
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Granted: 1962-09-04
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Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 Priaroggin Paolo Gazzana
- 👤 Siegfried Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:17
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/002; F16K31/00; F16K31/02; F16K31/025; F27; F27D; F27D7/00; F27D7/02; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1812; Y10T137/4456; Y10T137/4643; Y10T137/6416; Y10T137/6606; Y10T137/6851; Y10T137/7036
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |