US2160981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing thin wedges
Assignee: Individual
•
Filing: 1935-10-19
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Granted: 1939-06-06
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Expires: 1955-10-19
Abstract
No abstract record available.
Inventors
- 👤 O'brien Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:31
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; C23C14/044; C03; C03C; C03C17/00; C03C17/06; C03C17/09; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/263; C03C2218/00; C03C2218/10; C03C2218/15
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) | 1942-06-05 | 1942-12-05 | 1943-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-05 | 1946-12-05 | 1947-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-05 | 1950-12-05 | 1951-06-06 | $7700.00 | Window Closed / Lapsed |