US2428671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration apparatus
Assignee: CG Conn Ltd
•
Filing: 1944-05-09
•
Granted: 1947-10-07
•
Expires: 1964-05-09
Abstract
No abstract record available.
Inventors
- 👤 Earle L Kent
- 👤 Robert C Treseder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
G; G01; G01H; G01H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US185728A
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US1687507A
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DE548403C
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CH181880A
Cited
GB440319A
Cited
US2260210A
Cited
US2301291A
Cited
US2296213A
Cited
US2356229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |