Patent US3498167A successfully refreshed from Google Patents.
US3498167A
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Automatic precision numerical controlled punching and shearing machine
Assignee: WALTER P HILL Inc
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Filing: 1968-02-19
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Granted: 1970-03-03
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Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 Walter P Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:21
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/243; Y; Y10; Y10T; Y10T83/00; Y10T83/162; Y10T83/166; Y10T83/169; Y10T83/173; Y10T83/202; Y10T83/2074; Y10T83/2092; Y10T83/22; Y10T83/2203; Y10T83/444; Y10T83/447; Y10T83/4577; Y10T83/748; Y10T83/7487
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |