US2634124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic door opener
Assignee: MARY DAVIS MILLER
•
Filing: 1948-04-28
•
Granted: 1953-04-07
•
Expires: 1968-04-28
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/57; E05F15/59
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1216345A
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US1476510A
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US1721501A
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US1848311A
Cited
US2227115A
Cited
US2260080A
Cited
US2344276A
Cited
US2517768A
Cited
US2534525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |