US2483471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for examining materials
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1945-01-24
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Granted: 1949-10-04
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Mann Estle Ray
- 👤 Stanton Samuel Ward
- 👤 Jr Thomas Toliver Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:36
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2333976A
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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) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |