US2593075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter support
Assignee: Vale SA
•
Filing: 1946-04-10
•
Granted: 1952-04-15
•
Expires: 1966-04-10
Abstract
No abstract record available.
Inventors
- 👤 Vale Jalva
- 👤 Charles E Klopfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:02
CPC Classifications
A; A47; A47B; A47B21/00; A47B21/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18752
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1337267A
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US1516776A
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US1774264A
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US2002538A
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US2156862A
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AU2372335A
Cited
GB524889A
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US2238294A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |