US2378562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die
Assignee: AT&T Inc
•
Filing: 1943-10-12
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Granted: 1945-06-19
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Expires: 1963-10-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Lahr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:47
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T403/00; Y10T403/55; Y10T403/553; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9437
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) | 1948-06-18 | 1948-12-18 | 1949-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-18 | 1952-12-18 | 1953-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-18 | 1956-12-18 | 1957-06-19 | $7700.00 | Window Closed / Lapsed |