US3420083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller pressure high intensity quench systems
Assignee: Drever Co
•
Filing: 1967-12-08
•
Granted: 1969-01-07
•
Expires: 1987-12-08
Abstract
No abstract record available.
Inventors
- 👤 Franklin C Safford
- 👤 Robert A Mcgrath
- 👤 Edgar Lloyd Loveless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:11
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/667; B; B21; B21B; B21B45/00; B21B45/02; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1761199A
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US2616437A
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US2776230A
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US2871529A
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US2900992A
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US3036825A
Cited
US3041686A
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US3208742A
Cited
US3140964A
Cited
US3151197A
Cited
US3367804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |