US3483856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relieved cylinder head
Assignee: Caterpillar Inc
•
Filing: 1967-11-13
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Granted: 1969-12-16
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Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Gordon L Lovestrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02B; F02B2275/00; F02B2275/10; F02B2275/14; F02B3/00; F02B3/06; F02F2001/008; F02F2001/244; F02F2001/247; F02F2001/248
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) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |