Patent US2728447A successfully refreshed from Google Patents.
US2728447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire drawer
Assignee: Ajax Manufacturing Co
•
Filing: 1951-01-23
•
Granted: 1955-12-27
•
Expires: 1971-01-23
Abstract
No abstract record available.
Inventors
- 👤 Ben F Ware
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:15
CPC Classifications
B; B21; B21C; B21C19/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2018211A
Cited
US2226400A
Cited
US2228746A
Cited
US2310914A
Cited
US2337881A
Cited
US2492544A
Cited
US2487972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |