US2428662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing device
Assignee: —
•
Filing: —
•
Granted: 1947-10-07
•
Expires: 1964-10-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:55
CPC Classifications
G; G01; G01C; G01C1/00; G01C1/02; G07; G07C; G07C1/00; G07C1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2337045A
Cited
US1412574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |