US1984031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing and sorting articles
Assignee: AT&T Inc
•
Filing: 1930-11-08
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Granted: 1934-12-11
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Expires: 1950-11-08
Abstract
No abstract record available.
Inventors
- 👤 Chester A Purdy
- 👤 Jr Robert E Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:56
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/344; G; G01; G01R; G01R31/00; G01R31/01; G01R31/013; G01R31/016; Y; Y10; Y10S; Y10S209/00; Y10S209/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-12-10 | 1938-06-11 | 1938-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-10 | 1942-06-11 | 1942-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-10 | 1946-06-11 | 1946-12-11 | $7700.00 | Window Closed / Lapsed |