US2669237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means for divider plates of filing drawers
Assignee: General Fireproofing Co
•
Filing: 1952-09-03
•
Granted: 1954-02-16
•
Expires: 1972-09-03
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Straubel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:38
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619323A
Cited
US857271A
Cited
US1666700A
Cited
US1983576A
Cited
US2169562A
Cited
US2281463A
Cited
US2312742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |