US2623570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for expanding the ends of pipes
Assignee: Individual
•
Filing: 1950-03-02
•
Granted: 1952-12-30
•
Expires: 1970-03-02
Abstract
No abstract record available.
Inventors
- 👤 Helen W Resser
- 👤 The Dollar Savings And Company
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:08
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/02; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1033; Y10T279/1037; Y10T279/1041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US255010A
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US524324A
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US1451381A
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US907396A
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US1436659A
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US1677860A
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US1879009A
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US1919394A
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US2158312A
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US2375763A
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US2359167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |