Patent US2598895A successfully refreshed from Google Patents.
US2598895A
Expired / Lapsed
US
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Flexible drive means for concrete vibrators
Assignee: Individual
•
Filing: 1947-06-27
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Granted: 1952-06-03
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Expires: 1967-06-27
Abstract
No abstract record available.
Inventors
- 👤 Dreyer Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/02; E04G21/06; E04G21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR752264A
Cited
US2112004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |