US1904848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material working machine
Assignee: AT&T Inc
•
Filing: 1930-01-31
•
Granted: 1933-04-18
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Expires: 1950-01-31
Abstract
No abstract record available.
Inventors
- 👤 Roy J Beavers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:45
CPC Classifications
B; B23; B23B; B23B11/00; B23B9/00; B23B9/02; Y; Y10; Y10S; Y10S470/00; Y10S470/901; Y10S470/903; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5155; Y10T29/5168; Y10T29/517
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) | 1936-04-17 | 1936-10-17 | 1937-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-17 | 1940-10-17 | 1941-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-17 | 1944-10-17 | 1945-04-18 | $7700.00 | Window Closed / Lapsed |