US2291506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizing press
Assignee: National Rubber Machinery Co
•
Filing: 1939-10-30
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Granted: 1942-07-28
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Expires: 1959-10-30
Abstract
No abstract record available.
Inventors
- 👤 Florain J Shook
- 👤 Henning T Tornberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:12
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601
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) | 1945-07-27 | 1946-01-26 | 1946-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-27 | 1950-01-26 | 1950-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-27 | 1954-01-26 | 1954-07-28 | $7700.00 | Window Closed / Lapsed |