Patent US2771088A successfully refreshed from Google Patents.
US2771088A
Expired / Lapsed
US
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Shield
Assignee: Individual
•
Filing: 1951-11-07
•
Granted: 1956-11-20
•
Expires: 1971-11-07
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Soldan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:37
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/003; Y; Y10; Y10S; Y10S135/00; Y10S135/903; Y10S135/904; Y10S135/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US376436A
Cited
US1652581A
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US1803626A
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US2137625A
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US2097923A
Cited
US2159273A
Cited
GB527450A
Cited
US2612900A
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 |