Patent US2688441A successfully refreshed from Google Patents.
US2688441A
Expired / Lapsed
US
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Distribution classifier
Assignee: Exact Weight Scale Co
•
Filing: 1951-02-02
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Granted: 1954-09-07
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Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Roger L Merrill
- 👤 Hecox William
- 👤 Jr William P Der Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
H; H03; H03M; H03M1/00; B; B07; B07C; B07C5/00; B07C5/16; B07C5/30; B07C5/32; H03M1/12; H03M1/1205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2295534A
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US2407286A
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US2543050A
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US2525020A
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US2486391A
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US2486390A
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US2609686A
Cited
US2531187A
Cited
US2528394A
Cited
US2566426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |