US2471145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit strip assembly
Assignee: Ditto Inc
•
Filing: 1944-12-30
•
Granted: 1949-05-24
•
Expires: 1964-12-30
Abstract
No abstract record available.
Inventors
- 👤 Andrew L Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/08; G09F3/14; Y; Y10; Y10S; Y10S493/00; Y10S493/961
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US338685A
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GB191121193A
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US1677344A
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US1801224A
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US1817837A
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US2068359A
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US2192268A
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US2170147A
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US2248317A
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US2228109A
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US2316797A
Cited
FR880823A
Cited
US2400211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |