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US2728496A
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US
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Assignee: Individual
•
Filing: 1952-08-14
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Granted: 1955-12-27
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Expires: 1972-08-14
Abstract
No abstract record available.
Inventors
- 👤 Robert F Sego
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:28
CPC Classifications
B; B25; B25H; B25H3/00; B25H3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US47646A
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US426766A
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US640854A
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US694237A
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US741434A
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US766661A
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US835675A
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US1068854A
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US1256360A
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US1412983A
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US1835937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |