US1580694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: HARVEY K RUSSELL
•
Filing: 1925-03-12
•
Granted: 1926-04-13
•
Expires: 1945-03-12
Abstract
No abstract record available.
Inventors
- 👤 Charles T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:39
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/08; F16L37/10; F16L37/101; Y; Y10; Y10S; Y10S285/00; Y10S285/924
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) | 1929-04-12 | 1929-10-12 | 1930-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-04-12 | 1933-10-12 | 1934-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-04-12 | 1937-10-12 | 1938-04-13 | $7700.00 | Window Closed / Lapsed |