US2521847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for heating molds
Assignee: Individual
•
Filing: 1949-08-30
•
Granted: 1950-09-12
•
Expires: 1969-08-30
Abstract
No abstract record available.
Inventors
- 👤 Claude F Harr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/02; B29C33/04; B29C2033/042
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) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |