Patent US3371834A successfully refreshed from Google Patents.
US3371834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web feed system providing an auxiliary correcting feed movement
Assignee: Spartanics Ltd
•
Filing: 1965-12-16
•
Granted: 1968-03-05
•
Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 Samuel P Willits
- 👤 William L Mohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:55
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/021
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2029919A
Cited
US2039236A
Cited
US2095125A
Cited
US3204842A
Cited
US3192812A
Cited
US3281041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |