US3424600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid mixes for foundry cores and moulds and method of manufacturing foundry cores and moulds from same
Assignee: Individual
•
Filing: 1965-05-26
•
Granted: 1969-01-28
•
Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 Abram Moiseevich Liass
- 👤 Pavel Afanasievich Borsook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:52
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/02; B22C1/16; B22C1/18; B22C1/186; B22C1/188; B22C1/20; B22C1/22; B22C1/2233; B22C1/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1077958A
Cited
US2752257A
Cited
US2888354A
Cited
US2975494A
Cited
US3247556A
Cited
GB953954A
Cited
US3202522A
Cited
US3232777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |