US3534197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction gas heater
Assignee: POLLUTANT SEPARATION Inc
•
Filing: 1966-06-01
•
Granted: 1970-10-13
•
Expires: 1986-06-01
Abstract
No abstract record available.
Inventors
- 👤 Henry J Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/105; H05B6/108
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US442649A
Cited
US1479033A
Cited
US1421937A
Cited
US1868005A
Cited
DE640974C
Cited
GB803005A
Cited
GB431990A
Cited
US2237569A
Cited
US2329693A
Cited
US2518683A
Cited
US2958755A
Cited
US3243744A
Cited
US3307009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |