US2996062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic heating system
Assignee: Individual
•
Filing: 1956-10-01
•
Granted: 1961-08-15
•
Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Weiss Gerhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:24
CPC Classifications
B; B64; B64D; B64D10/00; A; A41; A41D; A41D13/00; A41D13/002; A41D13/005; A41D13/0051; F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0057; F23D2206/0063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741820A
Cited
US1213470A
Cited
US2042690A
Cited
US2384852A
Cited
US2493266A
Cited
US2658742A
Cited
US2800891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |