Patent US2431872A successfully refreshed from Google Patents.
US2431872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold vibrator
Assignee: Individual
•
Filing: 1944-05-16
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Granted: 1947-12-02
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Expires: 1964-05-16
Abstract
No abstract record available.
Inventors
- 👤 Kavula Alex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:25
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US316544A
Cited
US366157A
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US476047A
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US768956A
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US1010851A
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US1908104A
Cited
US1785757A
Cited
US1973893A
Cited
US1994705A
Cited
US2252220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |