US3465810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for casting metal
Assignee: SYLVESTER ENTERPRISES Inc
•
Filing: 1967-12-04
•
Granted: 1969-09-09
•
Expires: 1987-12-04
Abstract
No abstract record available.
Inventors
- 👤 Edmund Quincy Sylvester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:48
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US535671A
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US2426814A
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US2865068A
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US3208117A
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US3192581A
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US3342248A
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US3265348A
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US3353585A
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US3367401A
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US3344840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |