US3049173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner
Assignee: NAT HEATER Co Inc
•
Filing: 1959-08-31
•
Granted: 1962-08-14
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 George T Costello
- 👤 William O Dickinson
- 👤 Peter J Dreher
- 👤 James H Nicklas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/18; F24H9/1854; F24H9/1877; F24H9/1881; F23; F23C; F23C7/00; F23C7/002; F23C7/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191218359A
Cited
US1907838A
Cited
US2000733A
Cited
US1953590A
Cited
US2335188A
Cited
US2458543A
Cited
US2835320A
Cited
US2836409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |