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US2908138A
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Hydraulic impact pulsator transmission system
Assignee: CHARLES F WARREN JR
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Filing: 1954-04-21
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Granted: 1959-10-13
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Expires: 1974-04-21
Abstract
No abstract record available.
Inventors
- 👤 Warren Kathleen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:20
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124; B; B25; B25D; B25D9/00; B25D9/06; B25D9/12; F; F04; F04B; F04B49/00; F04B49/02; F15; F15B; F15B21/00; F15B21/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |