US2815569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cutting material having a frangible coating
Assignee: General Electric Co
•
Filing: 1952-09-17
•
Granted: 1957-12-10
•
Expires: 1972-09-17
Abstract
No abstract record available.
Inventors
- 👤 James H Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:50
CPC Classifications
B; B23; B23D; B23D29/00; B23D29/02; B23B; B23B51/00; B23B51/04; B23B51/0426; B26; B26D; B26D7/00; B26D7/08; B26D7/084; B26F; B26F1/00; B26F1/38; B26F1/3846; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995; Y10T29/49996; Y10T408/00; Y10T408/03; Y10T408/55; Y10T408/557; Y10T408/558; Y10T408/5583; Y10T408/5584; Y10T408/561; Y10T408/5623; Y10T408/56245
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |