US3448496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for casting ceramic articles including separate closed loop conveyors for molds and cores
Assignee: Trane US Inc
•
Filing: 1967-09-15
•
Granted: 1969-06-10
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Expires: 1987-09-15
Abstract
No abstract record available.
Inventors
- 👤 Alanson J Arnold
- 👤 Burton Van Dyke
- 👤 Don Van Dyke
- 👤 David D Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:14
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26; B28B1/267
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1813721A
Cited
US1557371A
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US1789643A
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US1865244A
Cited
US2583842A
Cited
US2978854A
Cited
US3240356A
Cited
US3189971A
Cited
US3305907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |