Patent US6674769B1 successfully refreshed from Google Patents.
US2981566A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1956-07-02
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Granted: 1961-04-25
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Lyon George Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:43
CPC Classifications
B; B60; B60B; B60B7/00; B60B7/06; B60B7/10; B60B7/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221747A
Cited
US2351655A
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US2621978A
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US2644721A
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US2683629A
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US2749184A
Cited
US2724882A
Cited
US2749186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |