Patent US2553972A successfully refreshed from Google Patents.
US2553972A
Expired / Lapsed
US
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Electromechanical time counter
Assignee: Individual
•
Filing: 1948-07-01
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Granted: 1951-05-22
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Expires: 1968-07-01
Abstract
No abstract record available.
Inventors
- 👤 William H Jensen
- 👤 Maurice R Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:08
CPC Classifications
G; G04; G04F; G04F8/00; G04F8/006; B; B23; B23K; B23K11/00; B23K11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US166304A
Cited
US1414910A
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DE372738C
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US1813777A
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US1065192A
Cited
US1456313A
Cited
DK54289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |