US2521206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing specimens of molding material
Assignee: Harry W Dietert Co
•
Filing: 1945-07-30
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Granted: 1950-09-05
•
Expires: 1965-07-30
Abstract
No abstract record available.
Inventors
- 👤 Harry W Dietert
- 👤 Robert L Doelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26
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) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |