US2556148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting die sets
Assignee: ARTHUR E PETZON
•
Filing: 1945-10-05
•
Granted: 1951-06-05
•
Expires: 1965-10-05
Abstract
No abstract record available.
Inventors
- 👤 Schaefer Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:36
CPC Classifications
C; C14; C14B; C14B5/00; C14B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1997500A
Cited
US2085959A
Cited
US2242117A
Cited
US2186799A
Cited
US2238302A
Cited
US2392804A
Cited
US2370836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |