US3046378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid heater
Assignee: Lindberg Engineering Co
•
Filing: 1960-04-25
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Granted: 1962-07-24
•
Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 George W Holz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:02
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/105; H05B6/108; F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/102; F24H1/105; F24H1/12; F24H1/14; F24H1/16; F24H1/162; F24H3/00; F24H3/02; F24H3/022; Y; Y10; Y10S; Y10S159/00; Y10S159/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1918637A
Cited
US2747068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |