Patent US2801309A successfully refreshed from Google Patents.
US2801309A
Expired / Lapsed
US
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Door switch assembly
Assignee: Kingston Products Corp
•
Filing: 1951-11-20
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Granted: 1957-07-30
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Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Nathan B Higbie
- 👤 Wilbur H Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:42
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/12; H01H13/14; H01H13/18; H01H13/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US859367A
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US997036A
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US1149599A
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DE328975C
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US1628209A
Cited
US2193690A
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US2256670A
Cited
US2568610A
Cited
US2641662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |