US2912271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door latch mechanism
Assignee: INTERIOR STEEL EQUIPMENT Co
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Filing: 1957-10-28
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Granted: 1959-11-10
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Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Wilbur J Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:04
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/02; E05B65/025; Y; Y10; Y10S; Y10S292/00; Y10S292/68; Y10T; Y10T292/00; Y10T292/08; Y10T292/0886; Y10T292/0887; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1025; Y10T292/57; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5097
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |