Patent US1437528A successfully refreshed from Google Patents.
US1437528A
Expired / Lapsed
US
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Feeder for melting pots
Assignee: Cutler Hammer Manufacturing Co
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Filing: 1917-05-21
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Granted: 1922-12-05
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Expires: 1937-05-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin N Lightfoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:17
CPC Classifications
B; B41; B41B; B41B11/00; B41B11/52; B41B11/74; B41B11/76; B41B11/82
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) | 1925-12-04 | 1926-06-05 | 1926-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-12-04 | 1930-06-05 | 1930-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-12-04 | 1934-06-05 | 1934-12-05 | $7700.00 | Window Closed / Lapsed |