Patent US2441094A successfully refreshed from Google Patents.
US2441094A
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Assignee: EDWARD D ANDREWS
•
Filing: 1943-10-05
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Granted: 1948-05-04
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Expires: 1963-10-05
Abstract
No abstract record available.
Inventors
- 👤 Sterling W Alderfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:35
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US285953A
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US408124A
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US1369877A
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US1454367A
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US1669650A
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US1772674A
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US2208490A
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US2272132A
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US2342635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |