Patent US3019520A successfully refreshed from Google Patents.
US3019520A
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Pipe crimping apparatus
Assignee: Tex Tube Inc
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Filing: 1961-01-23
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Granted: 1962-02-06
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Woolley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:20
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B25; B25B; B25B27/00; B25B27/02; B25B27/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/53; Y10T29/53652; Y10T29/53796; Y10T29/5383; Y10T29/53987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894835A
Cited
US2381747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |