US3268989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling a ceramic lined water heater
Assignee: Carrier Corp
•
Filing: 1962-03-26
•
Granted: 1966-08-30
•
Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Lee R Erwin
- 👤 Gordon E Gustavson
- 👤 Douglas W Mccallum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/0005; F28; F28F; F28F19/00; F28F19/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49387; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2229526A
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US2322488A
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US2348696A
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US2372946A
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US2618846A
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US2842840A
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US2777194A
Cited
US3053511A
Cited
US2992545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |