US2523261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure arrangement for fluid heating devices
Assignee: MARIA DE REITZES MARIENWERT
•
Filing: 1947-11-06
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Granted: 1950-09-26
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Expires: 1967-11-06
Abstract
No abstract record available.
Inventors
- 👤 Octavio J Alvarez
- 👤 Jr Robert E Fulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1185673A
Cited
US1462322A
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US1481258A
Cited
US1916228A
Cited
US1927287A
Cited
FR835095A
Cited
US2306921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |