Patent US3369104A successfully refreshed from Google Patents.
US3369104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat producing device
Assignee: LAWRENCE R LOVERCHECK
•
Filing: 1965-04-08
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Granted: 1968-02-13
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Expires: 1985-04-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence R Lovercheck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:34
CPC Classifications
H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1728292A
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US2240678A
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US2626971A
Cited
US2875348A
Cited
US2897336A
Cited
US3007027A
Cited
US3241028A
Cited
US3277271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |