Patent US2549790A successfully refreshed from Google Patents.
US2549790A
Expired / Lapsed
US
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Metal transfer and pouring system
Assignee: Singmaster and Breyer
•
Filing: 1948-06-11
•
Granted: 1951-04-24
•
Expires: 1968-06-11
Abstract
No abstract record available.
Inventors
- 👤 William H Finkeldey
- 👤 Fletcher R Edes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:53
CPC Classifications
B; B22; B22D; B22D39/00; B22D39/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2842
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |