US2656594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming bolt-retaining rings for flanged pipe coupling assemblies
Assignee: VULCAN RES CORP
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Filing: 1950-11-02
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Granted: 1953-10-27
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Expires: 1970-11-02
Abstract
No abstract record available.
Inventors
- 👤 Carl J Westling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:46
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/02; F16L23/036; B; B21; B21D; B21D39/00; B21D39/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US283136A
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US1525647A
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US1784142A
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US1928823A
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US2293997A
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US2427685A
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US2451500A
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US2613719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |