Patent US2030858A successfully refreshed from Google Patents.
US2030858A
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US
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Typewriting machine
Assignee: Underwood Elliott Fisher Co
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Filing: 1932-05-27
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Granted: 1936-02-18
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Expires: 1952-05-27
Abstract
No abstract record available.
Inventors
- 👤 William A Dobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:30
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/12; B41J29/13; Y; Y10; Y10T; Y10T24/00; Y10T24/40; Y10T24/4002; Y10T24/4012; Y10T24/4014; Y10T24/4028; Y10T24/4033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-02-17 | 1939-08-19 | 1940-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-02-17 | 1943-08-19 | 1944-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-02-17 | 1947-08-19 | 1948-02-18 | $7700.00 | Window Closed / Lapsed |