US3498732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater
Assignee: ROBERT I SCHANTZ
•
Filing: 1967-12-18
•
Granted: 1970-03-03
•
Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Robert I Schantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:54
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/12; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/107; F23D2206/00; F23D2206/0057; F23D2206/0063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |