US3364976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting employing self-generated vacuum
Assignee: Dow Chemical Co
•
Filing: 1965-03-05
•
Granted: 1968-01-23
•
Expires: 1985-03-05
Abstract
No abstract record available.
Inventors
- 👤 John N Reding
- 👤 Marvin R Bothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:17
CPC Classifications
B; B22; B22D; B22D21/00; B22D21/002; B22D21/007; B22D17/00; B22D17/14; B22D18/00; B22D18/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053880A
Cited
US1555978A
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US2192792A
Cited
US2665999A
Cited
US2671955A
Cited
US2881068A
Cited
US3235346A
Cited
US3166415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |