US3482080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater assembly
Assignee: WILLIAM J KASSEN
•
Filing: 1967-11-13
•
Granted: 1969-12-02
•
Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 William J Kassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H05B3/565
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2160758A
Cited
US2390475A
Cited
US2633522A
Cited
US2584302A
Cited
US2809265A
Cited
US3000433A
Cited
US3393297A
Cited
US3423570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |