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Patent US2821768A successfully refreshed from Google Patents.
US2821768A
Expired / Lapsed
US
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Clamping band for pipe joints
Assignee: TEXAS FOUNDRIES Inc
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Filing: 1954-12-13
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Granted: 1958-02-04
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Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Joe W Beckham
- 👤 Yeoman Ray Cyrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:49
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16L33/04; F16L33/06; Y; Y10; Y10S; Y10S285/00; Y10S285/903; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1433; Y10T24/1435
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |