US3041048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting grid
Assignee: Akzona Inc
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Filing: 1960-03-07
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Granted: 1962-06-26
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Expires: 1980-03-07
Abstract
No abstract record available.
Inventors
- 👤 Heijnis James Watt Ijsbrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:40
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/022; D; D01; D01D; D01D1/00; D01D1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |