US3471683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater roll
Assignee: Rogers Corp
•
Filing: 1967-04-25
•
Granted: 1969-10-07
•
Expires: 1987-04-25
Abstract
No abstract record available.
Inventors
- 👤 Irving R Bogue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:25
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; H; H05; H05B; H05B3/00; H05B3/0095
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2870312A
Cited
US2985860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |