Patent US2599535A successfully refreshed from Google Patents.
US2599535A
Expired / Lapsed
US
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Line spacing mechanism for typing machines
Assignee: SCM Corp
•
Filing: 1950-05-04
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Granted: 1952-06-10
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Expires: 1970-05-04
Abstract
No abstract record available.
Inventors
- 👤 Avery Henry Allen
- 👤 Joseph P Barkdoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:09
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/76; B41J19/78; B41J19/80; B41J19/82; B41J19/84; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |