US2481699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal melting furnace
Assignee: PETERSEN OVEN Co
•
Filing: 1944-10-06
•
Granted: 1949-09-13
•
Expires: 1964-10-06
Abstract
No abstract record available.
Inventors
- 👤 Jack L Stroman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:07
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144230A
Cited
US879480A
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US1057883A
Cited
US1546178A
Cited
US1749083A
Cited
DE694151C
Cited
US2365235A
Cited
US2355095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |