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US2539592A
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US
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Assignee: Individual
•
Filing: 1946-10-01
•
Granted: 1951-01-30
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Expires: 1966-10-01
Abstract
No abstract record available.
Inventors
- 👤 Lollie E Prince
- 👤 Var Sam L Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:35
CPC Classifications
A; A01; A01C; A01C5/00; A01C5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US266805A
Cited
US973824A
Cited
US1078282A
Cited
US1044930A
Cited
US1062882A
Cited
US1966966A
Cited
US2319737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |