Patent US2678734A successfully refreshed from Google Patents.
US2678734A
Expired / Lapsed
US
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Card filing system
Assignee: Individual
•
Filing: 1949-06-09
•
Granted: 1954-05-18
•
Expires: 1969-06-09
Abstract
No abstract record available.
Inventors
- 👤 Sherman S Karns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:29
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1237956A
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US1347272A
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US1657074A
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US1902748A
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US2171110A
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US2235660A
Cited
US2493538A
Cited
US2538507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |