Patent US3069188A successfully refreshed from Google Patents.
US3069188A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1961-01-26
•
Granted: 1962-12-18
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 Cullen B Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:50
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10; F16L19/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2139413A
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US2211856A
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US2252920A
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US2349180A
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US2405822A
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US2536552A
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US2544108A
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US2484815A
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US2761704A
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US2701149A
Cited
US2873985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |