Patent US2551149A successfully refreshed from Google Patents.
US2551149A
Expired / Lapsed
US
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Reel
Assignee: Individual
•
Filing: 1946-02-21
•
Granted: 1951-05-01
•
Expires: 1966-02-21
Abstract
No abstract record available.
Inventors
- 👤 Mccampbell Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
D; D06; D06F; D06F53/00; D06F53/04; D06F53/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323771A
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US470674A
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US671225A
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US687942A
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US778045A
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US845702A
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US1082637A
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US1024978A
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US1032395A
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US1140787A
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US1650364A
Cited
US1512188A
Cited
US1892276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |