US3547421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable length for production of patented steel wire
Assignee: Schloemann AG
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Filing: 1967-05-03
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Granted: 1970-12-15
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Expires: 1987-05-03
Abstract
No abstract record available.
Inventors
- 👤 Bernd Hoffmann
- 👤 Georg Bollig
- 👤 Otto Doepper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:55
CPC Classifications
B; B21; B21B; B21B39/00; B21B39/14; B21C; B21C47/00; B21C47/26; B21C47/262; C; C21; C21D; C21D1/00; C21D1/84; C21D9/00; C21D9/52; C21D9/525; C21D9/54; C21D9/56; C21D9/573; C21D9/5732; B21B45/00; B21B45/02; B21B2045/0236; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0224
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |