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US2774178A
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US
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Assignee: Individual
•
Filing: 1954-05-06
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Granted: 1956-12-18
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Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:23
CPC Classifications
B; B68; B68G; B68G15/00; A; A47; A47C; A47C21/00; A47C21/02; A47C21/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US448878A
Cited
US870034A
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US1253700A
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GB162783A
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US1403504A
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US1450209A
Cited
US1536255A
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US1552361A
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CH149120A
Cited
US1946373A
Cited
US2281736A
Cited
US2480264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |