US1881868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magazining device
Assignee: AT&T Inc
•
Filing: 1928-12-10
•
Granted: 1932-10-11
•
Expires: 1948-12-10
Abstract
No abstract record available.
Inventors
- 👤 Nelson Charles Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:02
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/20; B21D43/22; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53696; Y10T83/00; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2057; Y10T83/2059
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) | 1935-10-11 | 1936-04-11 | 1936-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-11 | 1940-04-11 | 1940-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-11 | 1944-04-11 | 1944-10-11 | $7700.00 | Window Closed / Lapsed |