US2430442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1944-06-14
•
Granted: 1947-11-11
•
Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Acheson Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/06; B62D33/0617; B62D33/0621
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1197294A
Cited
US1291342A
Cited
US1384735A
Cited
US1469713A
Cited
US1679642A
Cited
US1922545A
Cited
US1970887A
Cited
GB509764A
Cited
US2267227A
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 |