US2651483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: RITCHIE
•
Filing: 1950-07-27
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Granted: 1953-09-08
•
Expires: 1970-07-27
Abstract
No abstract record available.
Inventors
- 👤 William H Ritchie
- 👤 James T Humes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:32
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/04; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3449; Y10T292/00; Y10T292/08; Y10T292/0894; Y10T292/0895; Y10T292/0906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE199893C
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US1543253A
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US1660648A
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US2020585A
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US2084926A
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US2461071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |