US2156379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic battery grid casting and trimming machine
Assignee: Individual
•
Filing: 1937-04-05
•
Granted: 1939-05-02
•
Expires: 1957-04-05
Abstract
No abstract record available.
Inventors
- 👤 George A Donath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:52
CPC Classifications
B; B22; B22D; B22D25/00; B22D25/02; B22D25/04; Y; Y10; Y10S; Y10S164/00; Y10S164/01; Y10S83/00; Y10S83/903; Y10T; Y10T29/00; Y10T29/10
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) | 1942-05-01 | 1942-10-31 | 1943-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-01 | 1946-10-31 | 1947-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-01 | 1950-10-31 | 1951-05-02 | $7700.00 | Window Closed / Lapsed |