US2854725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cores
Assignee: Wilbert W Haase Co
•
Filing: 1956-05-01
•
Granted: 1958-10-07
•
Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Bast Walter
- 👤 Walter O Blasius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:57
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; B28B7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |