US3542914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hollow article casting
Assignee: LAVERGNE JOSEPH M SR
•
Filing: 1967-12-22
•
Granted: 1970-11-24
•
Expires: 1987-12-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Lavergne Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:04
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B7/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1188759A
Cited
US1983758A
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US2228123A
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US2556594A
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US2955341A
Cited
US3136024A
Cited
US3163910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |