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US940870A
Expired / Lapsed
US
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Flanged pipe.
Assignee: WHITLOCK COIL PIPE Co
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Filing: 1908-01-16
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Granted: 1909-11-23
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Expires: 1928-01-16
Abstract
No abstract record available.
Inventors
- 👤 Charles Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B43/103; E21B43/106; F; F16; F16L; F16L13/00; F16L13/14; F16L13/147; Y; Y10; Y10S; Y10S122/00; Y10S122/16; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1912-11-22 | 1913-05-24 | 1913-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-11-22 | 1917-05-24 | 1917-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-11-22 | 1921-05-24 | 1921-11-23 | $7700.00 | Window Closed / Lapsed |