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US2380302A
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Door operator
Assignee: ALBERT P WITHALL
•
Filing: 1944-01-06
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Granted: 1945-07-10
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Expires: 1964-01-06
Abstract
No abstract record available.
Inventors
- 👤 William A Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:04
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/02; E05B83/08; E05B83/10; B; B60; B60P; B60P3/00; B60P3/20; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1039; Y10T292/1041; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-07-09 | 1949-01-08 | 1949-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-07-09 | 1953-01-08 | 1953-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-07-09 | 1957-01-08 | 1957-07-10 | $7700.00 | Window Closed / Lapsed |