US3056400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air inlet and smoke outlet baffle structure for gas fired heater
Assignee: HANDLING EQUIPMENT Manufacturing CORP
•
Filing: 1960-02-08
•
Granted: 1962-10-02
•
Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Richard L Hammersley
- 👤 Donald E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:47
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205; F24H1/206; F23; F23J; F23J11/00; F23M; F23M9/00; F23M9/02; F24C; F24C15/00; F24C15/001; F24C15/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1939944A
Cited
US2734501A
Cited
US2087983A
Cited
US2226816A
Cited
US2647477A
Cited
US2678038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |