Patent US2543579A successfully refreshed from Google Patents.
US2543579A
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Assignee: Lovell Manufacturing Co
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Filing: 1946-03-22
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Granted: 1951-02-27
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Expires: 1966-03-22
Abstract
No abstract record available.
Inventors
- 👤 Walter L Kauffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/02; D06F58/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US63462A
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US394714A
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US454056A
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US527507A
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US1602463A
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FR706883A
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GB511612A
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US2314748A
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US2372790A
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US2406494A
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US2380652A
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US2434886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |