Patent US2730935A successfully refreshed from Google Patents.
US2730935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compactor
Assignee: Southwest Welding and Manufacturing Co
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Filing: 1951-01-15
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Granted: 1956-01-17
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Expires: 1971-01-15
Abstract
No abstract record available.
Inventors
- 👤 Earl B Maloon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:38
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/27
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |