Patent US2980805A successfully refreshed from Google Patents.
US2980805A
Expired / Lapsed
US
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Two-state apparatus
Assignee: Individual
•
Filing: 1957-02-11
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Granted: 1961-04-18
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Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 Norman F Moody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/963; E02F3/964; H; H03; H03K; H03K3/00; H03K3/01; H03K3/012; H03K3/02; H03K3/26; H03K3/28; H03K3/281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2655610A
Cited
US2655609A
Cited
US2838617A
Cited
FR1110585A
Cited
US2724061A
Cited
US2864062A
Cited
US2770732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |