Patent US2841389A successfully refreshed from Google Patents.
US2841389A
Expired / Lapsed
US
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Door apparatus and control
Assignee: Motors Liquidation Co
•
Filing: 1955-08-30
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Granted: 1958-07-01
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Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 William T Litherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:40
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/44; E05F15/60; E05F15/603; E05F15/632; E05F15/649; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1339671A
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US1533112A
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US1574197A
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US1396757A
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US1532492A
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US1634665A
Cited
US1533106A
Cited
US1890809A
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US2710186A
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US2634828A
Cited
US2687455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |