US2428698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding material
Assignee: AT&T Inc
•
Filing: 1945-02-06
•
Granted: 1947-10-07
•
Expires: 1965-02-06
Abstract
No abstract record available.
Inventors
- 👤 Deichmiller Alwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:42
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/04; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/444; Y10T83/4501; Y10T83/4503; Y10T83/727; Y10T83/741
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US674852A
Cited
US691883A
Cited
US1048136A
Cited
US1217501A
Cited
US1632593A
Cited
US2242097A
Cited
US2301064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |