US2604418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1948-02-17
•
Granted: 1952-07-22
•
Expires: 1968-02-17
Abstract
No abstract record available.
Inventors
- 👤 Stern Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
G; G04; G04D; G04D3/00; G04D3/0069; G04B; G04B19/00; G04B19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430424A
Cited
US1304749A
Cited
US864467A
Cited
CH65167A
Cited
US1821561A
Cited
GB445242A
Cited
GB483776A
Cited
US2516986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |