US2157252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling-in machine
Assignee: OLDBERG Manufacturing CO
•
Filing: 1937-03-31
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Granted: 1939-05-09
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Expires: 1957-03-31
Abstract
No abstract record available.
Inventors
- 👤 George A Visser
- 👤 Floyd E Deremer
- 👤 James T Sprott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:59
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T82/00; Y10T82/25; Y10T82/2593; Y10T82/2597
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) | 1942-05-08 | 1942-11-07 | 1943-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-08 | 1946-11-07 | 1947-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-08 | 1950-11-07 | 1951-05-09 | $7700.00 | Window Closed / Lapsed |