Patent US977740A successfully refreshed from Google Patents.
US977740A
Expired / Lapsed
US
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Pipe-coupling.
Assignee: Babcock and Wilcox Co
•
Filing: 1906-08-02
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Granted: 1910-12-06
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Expires: 1926-08-02
Abstract
No abstract record available.
Inventors
- 👤 Campbell P Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/02; F16L41/021; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T428/00; Y10T428/12; Y10T428/12375
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) | 1913-12-05 | 1914-06-06 | 1914-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-12-05 | 1918-06-06 | 1918-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-12-05 | 1922-06-06 | 1922-12-06 | $7700.00 | Window Closed / Lapsed |