US2625846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drilling cutting plates
Assignee: ENTERPRISE MANUFACTURING Co OF PENNSYLVANIA
•
Filing: 1951-02-13
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Granted: 1953-01-20
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Expires: 1971-02-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:14
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/30; B02C18/36; B02C18/365; Y; Y10; Y10T; Y10T408/00; Y10T408/03; Y10T408/96
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US257061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |