Patent US2430657A successfully refreshed from Google Patents.
US2430657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: Individual
•
Filing: 1943-05-06
•
Granted: 1947-11-11
•
Expires: 1963-05-06
Abstract
No abstract record available.
Inventors
- 👤 John G Zolleis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:07
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/04; F16L19/041; F16L47/00; F16L47/04; F16L47/041
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US187395A
Cited
FR341553A
Cited
US1157695A
Cited
GB266422A
Cited
US2000481A
Cited
GB437416A
Cited
US2122616A
Cited
US2328469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-10 | 1951-05-12 | 1951-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-10 | 1955-05-12 | 1955-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-10 | 1959-05-12 | 1959-11-11 | $7700.00 | Window Closed / Lapsed |