US3047702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate heater
Assignee: Individual
•
Filing: 1958-10-03
•
Granted: 1962-07-31
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Fredrick L Lefebvre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:06
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/68; H05B3/74; H05B3/748; H05B3/20; H05B3/22; H05B3/28; H05B3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1399428A
Cited
GB181405A
Cited
US1531308A
Cited
US1738150A
Cited
US2010768A
Cited
US2179934A
Cited
US2445086A
Cited
US2547402A
Cited
US2563875A
Cited
US2799765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |