US2339359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling sheet thickness in continuous strip mills
Assignee: Sperry Products Inc
•
Filing: 1941-03-20
•
Granted: 1944-01-18
•
Expires: 1961-03-20
Abstract
No abstract record available.
Inventors
- 👤 Shayne Alexander
- 👤 Zeitlin Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:21
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/58; B21B37/64; B21B37/60; Y; Y10; Y10T; Y10T83/00; Y10T83/141; Y10T83/148
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) | 1947-01-17 | 1947-07-19 | 1948-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-17 | 1951-07-19 | 1952-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-17 | 1955-07-19 | 1956-01-18 | $7700.00 | Window Closed / Lapsed |