Patent US2740475A successfully refreshed from Google Patents.
US2740475A
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US
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Perforating apparatus having a stripping medium mounted within a chamber in the punch member
Assignee: WALES STRIPPIT CORP
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Filing: 1953-01-08
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Granted: 1956-04-03
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Expires: 1973-01-08
Abstract
No abstract record available.
Inventors
- 👤 Paul H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:28
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278633A
Cited
US385056A
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US771391A
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US928256A
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US1789567A
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US1806266A
Cited
US2355344A
Cited
US2704125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |