US3134888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion heater assemblies
Assignee: Edwin L Wiegand Co
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Filing: 1960-12-19
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Granted: 1964-05-26
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 George E Ammerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; F; F24; F24H; F24H9/00; F24H9/18; F24H9/1809; F24H9/1818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |