US1609660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pressure-pipe joint
Assignee: Individual
•
Filing: 1925-02-19
•
Granted: 1926-12-07
•
Expires: 1945-02-19
Abstract
No abstract record available.
Inventors
- 👤 Claude A Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:36
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; F16L13/113
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) | 1929-12-06 | 1930-06-07 | 1930-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-12-06 | 1934-06-07 | 1934-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-12-06 | 1938-06-07 | 1938-12-07 | $7700.00 | Window Closed / Lapsed |