Patent US2600628A successfully refreshed from Google Patents.
US2600628A
Expired / Lapsed
US
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Sheet rolling machine
Assignee: Rheem Manufacturing Co
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Filing: 1949-01-10
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Granted: 1952-06-17
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Expires: 1969-01-10
Abstract
No abstract record available.
Inventors
- 👤 Llewellyn W Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:13
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US928073A
Cited
US957609A
Cited
US1351472A
Cited
GB162257A
Cited
US1783187A
Cited
US1943407A
Cited
US1905515A
Cited
FR774509A
Cited
GB468476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |