Patent US2452899A successfully refreshed from Google Patents.
US2452899A
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Assignee: MADISON DALLAS PICKENS
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Filing: 1942-05-20
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Granted: 1948-11-02
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Expires: 1962-05-20
Abstract
No abstract record available.
Inventors
- 👤 Alexander M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:54
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/10; A44B19/14; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2532; Y10T24/2534; Y10T24/2561; Y10T24/2582; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49908; Y10T29/49924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US244557A
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US1474699A
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US1559380A
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US1959319A
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US1959318A
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US2035028A
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US2169609A
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US2141900A
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US2169610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |