US2505202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Keppel LeTourneau USA Inc
•
Filing: 1947-01-11
•
Granted: 1950-04-25
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 Peterson Oscar Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/352
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1530779A
Cited
US1737252A
Cited
US2252763A
Cited
US2347882A
Cited
US2383978A
Cited
US2406300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |