US3519457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of ingot moulds
Assignee: ANTHONY C WARDELL
•
Filing: 1966-12-29
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Granted: 1970-07-07
•
Expires: 1986-12-29
Abstract
No abstract record available.
Inventors
- 👤 Roderic H Hammerton
- 👤 Anthony C Wardell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:16
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/062; B22C; B22C23/00; B22C23/02; C; C08; C08L; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA567031A
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US2234152A
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US3120684A
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US3047917A
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US3056692A
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US3037873A
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US3184815A
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GB1011220A
Cited
US3396935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |