US3486317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioning device for helical wrapping
Assignee: Caterpillar Inc
•
Filing: 1968-01-26
•
Granted: 1969-12-30
•
Expires: 1988-01-26
Abstract
No abstract record available.
Inventors
- 👤 Charles E Grawey
- 👤 Keith E Koch
- 👤 David V Nelson
- 👤 Robert W Untz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:49
CPC Classifications
B; B65; B65H; B65H81/00; B65H81/06; B65H81/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2875570A
Cited
US2001546A
Cited
US1830669A
Cited
US2253740A
Cited
US2279114A
Cited
US2921427A
Cited
US3138913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |