US2620530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of pistons
Assignee: United Engine and Machine Co
•
Filing: 1950-06-08
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Granted: 1952-12-09
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Expires: 1970-06-08
Abstract
No abstract record available.
Inventors
- 👤 Sulprizio Lucelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:24
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/0009; B22D19/0027; F; F16; F16B; F16B5/00; F16B5/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
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) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |