US2872037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel and die
Assignee: Dow Chemical Co
•
Filing: 1954-05-21
•
Granted: 1959-02-03
•
Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Ausel Gerhard
- 👤 Clifton J Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:19
CPC Classifications
B; B21; B21C; B21C25/00; B21C25/08; B21C23/00; B21C23/02; B21C23/04; B21C23/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US837707A
Cited
US2256545A
Cited
GB524529A
Cited
US2221299A
Cited
FR881486A
Cited
US2698684A
Cited
US2681734A
Cited
FR1040138A
Cited
US2798286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |