Patent US2553023A successfully refreshed from Google Patents.
US2553023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic door opener
Assignee: Individual
•
Filing: 1947-02-25
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Granted: 1951-05-15
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Expires: 1967-02-25
Abstract
No abstract record available.
Inventors
- 👤 Walters John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:26
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0046; E05B47/0047; E05B17/00; E05B17/0025; E05B17/0033; Y; Y10; Y10T; Y10T292/00; Y10T292/68; Y10T292/696; Y10T292/699
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US273622A
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US935475A
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US1367931A
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US1338052A
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US1509780A
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US1896363A
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US1854768A
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US2096503A
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US2149695A
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US2196865A
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US2407439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |