US2023904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of finishing metallic sheets
Assignee: SCHULTE GRINDING AND POLISHING
•
Filing: 1932-06-06
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Granted: 1935-12-10
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Expires: 1952-06-06
Abstract
No abstract record available.
Inventors
- 👤 Schulte Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
B; B21; B21B; B21B45/00; B21B1/00; B21B1/22; B24; B24B; B24B7/00; B24B7/10; B24B7/12; B24B7/13; B21B45/04; B21B45/06; Y; Y10; Y10T; Y10T29/00; Y10T29/30; Y10T29/301
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) | 1938-12-09 | 1939-06-10 | 1939-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-09 | 1943-06-10 | 1943-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-09 | 1947-06-10 | 1947-12-10 | $7700.00 | Window Closed / Lapsed |