US2720264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blanking and perforating work-pieces
Assignee: WALES STRIPPIT CORP
•
Filing: 1950-09-19
•
Granted: 1955-10-11
•
Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Paul H Taylor
- 👤 George F Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/04; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US392886A
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US1309157A
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US1618453A
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US1571672A
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US2494018A
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US2419862A
Cited
US2371565A
Cited
US2410372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |