US2843375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined sliding and side sealing door
Assignee: Richards Wilcox Manufacturing Co
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Filing: 1955-11-16
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Granted: 1958-07-15
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Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 Robert F Lesage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:01
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/10; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05F15/646; E06; E06B; E06B3/00; E06B3/01; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4636; E06B3/4645; E05D2015/1028; E05D2015/1031; E05D2015/1036; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/108
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) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |