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US2666580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dividend-divisor aligning
Assignee: —
•
Filing: —
•
Granted: 1954-01-19
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Expires: 1971-01-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:01
CPC Classifications
F; F16; F16K; F16K31/00; G; G06; G06C; G06C15/00; G06C15/08; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/52; G06F7/535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2365507A
Cited
US2366345A
Cited
US2399917A
Cited
US2408097A
Cited
US2636677A
Cited
US2365325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |