US2429485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve guide slide
Assignee: Individual
•
Filing: 1945-02-19
•
Granted: 1947-10-21
•
Expires: 1965-02-19
Abstract
No abstract record available.
Inventors
- 👤 Herman E Pleasant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:52
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1154847A
Cited
US1300328A
Cited
US1532324A
Cited
US1593833A
Cited
US1767519A
Cited
US1814604A
Cited
US1949092A
Cited
US2257292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |