US2568516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: Individual
•
Filing: 1948-05-19
•
Granted: 1951-09-18
•
Expires: 1968-05-19
Abstract
No abstract record available.
Inventors
- 👤 Albert T Scheiwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/22; F16L37/23; F16L37/28; F16L37/38; F16L37/40; F16L37/413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1364147A
Cited
US2135221A
Cited
US2111956A
Cited
US2279146A
Cited
US2297548A
Cited
US2397342A
Cited
US2412685A
Cited
US2428637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |