Patent US2771165A successfully refreshed from Google Patents.
US2771165A
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US
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Assignee: Individual
•
Filing: 1952-09-29
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Granted: 1956-11-20
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Expires: 1972-09-29
Abstract
No abstract record available.
Inventors
- 👤 Elva L Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:56
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1704314A
Cited
US1857076A
Cited
US1834031A
Cited
US1982351A
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US2035862A
Cited
US2114617A
Cited
US2266973A
Cited
US2637422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |