Patent US2182403A successfully refreshed from Google Patents.
US2182403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting pot
Assignee: Lester Engineering Co
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Filing: 1937-04-07
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Granted: 1939-12-05
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Expires: 1957-04-07
Abstract
No abstract record available.
Inventors
- 👤 Lester Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:17
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/02; B22D17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-12-04 | 1943-06-05 | 1943-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-04 | 1947-06-05 | 1947-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-04 | 1951-06-05 | 1951-12-05 | $7700.00 | Window Closed / Lapsed |