Patent US6731940B1 successfully refreshed from Google Patents.
US2607464A
Expired / Lapsed
US
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Stenographic typewriting machine
Assignee: Individual
•
Filing: 1948-04-01
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Granted: 1952-08-19
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Expires: 1968-04-01
Abstract
No abstract record available.
Inventors
- 👤 Reed Mildred
- 👤 Franklin H Bickford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:22
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190513609A
Cited
FR422549A
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US1222748A
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US1280977A
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FR549498A
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US1843929A
Cited
US2189023A
Cited
US2318519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |