Patent US3507431A successfully refreshed from Google Patents.
US3507431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pin feed tractor mechanism
Assignee: NCR Voyix Corp
•
Filing: 1968-05-03
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Granted: 1970-04-21
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Expires: 1988-05-03
Abstract
No abstract record available.
Inventors
- 👤 Harold E Hepp
- 👤 Roger W Biser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:24
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/20; B41; B41J; B41J11/00; B41J11/26; B41J11/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2171003A
Cited
US3113823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |