US2374376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material working apparatus
Assignee: AT&T Inc
•
Filing: 1944-03-31
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Granted: 1945-04-24
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Expires: 1964-03-31
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel M Olney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:51
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/04; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4577; Y10T83/647; Y10T83/6572; Y10T83/6574; Y10T83/727; Y10T83/739; Y10T83/748; Y10T83/7593; Y10T83/7647; Y10T83/7653; Y10T83/766; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/8821; Y10T83/8825
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) | 1948-04-23 | 1948-10-23 | 1949-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-23 | 1952-10-23 | 1953-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-23 | 1956-10-23 | 1957-04-24 | $7700.00 | Window Closed / Lapsed |