US2638958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugation crimping device
Assignee: Butler Manufacturing Co
•
Filing: 1952-02-15
•
Granted: 1953-05-19
•
Expires: 1972-02-15
Abstract
No abstract record available.
Inventors
- 👤 Victor C Norquist
- 👤 Harl S Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:06
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02; B21D22/027; B21D13/00; B21D13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE303139C
Cited
US722186A
Cited
CH81339A
Cited
US1462474A
Cited
US1704326A
Cited
US1741907A
Cited
US2373057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |