Patent US2452211A successfully refreshed from Google Patents.
US2835503A
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Assignee: Individual
•
Filing: 1956-02-24
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Granted: 1958-05-20
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Expires: 1976-02-24
Abstract
No abstract record available.
Inventors
- 👤 William N Humphries
- 👤 Fannie H Humphries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/26; A; A01; A01G; A01G20/00; A01G20/30; B62B2202/00; B62B2202/40; B62B2202/402; B62B2202/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US418435A
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US1733868A
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CA490378A
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US846133A
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GB104432A
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US2262398A
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US2435893A
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US2411965A
Cited
FR927776A
Cited
US2482372A
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US2659042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |