Patent US4735619A successfully refreshed from Google Patents.
Patent US1498520A successfully refreshed from Google Patents.
US1498520A
Expired / Lapsed
US
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Valve for internal-combustion engines and method of making the same
Assignee: Motors Liquidation Co
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Filing: 1921-05-14
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Granted: 1924-06-17
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Expires: 1941-05-14
Abstract
No abstract record available.
Inventors
- 👤 Blackmore Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:52
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/001; B23P15/002; F; F01; F01L; F01L3/00; F01L3/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49314
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-06-17 | 1927-12-17 | 1928-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-06-17 | 1931-12-17 | 1932-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-06-17 | 1935-12-17 | 1936-06-17 | $7700.00 | Window Closed / Lapsed |