US2942291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closing and checking device
Assignee: LCN CLOSERS Inc
•
Filing: 1957-01-14
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Granted: 1960-06-28
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Russell C Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:38
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/32; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/624; E05Y2201/628; E05Y2201/636; E05Y2800/00; E05Y2800/37; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32114; Y10T403/32188; Y10T403/32196; Y10T403/32213; Y10T403/32221; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451; Y10T403/32459
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |