US2626628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic change-over
Assignee: SOUTHWESTERN DEV Co
•
Filing: 1948-12-17
•
Granted: 1953-01-27
•
Expires: 1968-12-17
Abstract
No abstract record available.
Inventors
- 👤 Harold L Norway
- 👤 Willis A Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/04; F17C13/045; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/2569; Y10T137/8158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE503304C
Cited
US2197144A
Cited
US2311828A
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US2334977A
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US2380956A
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US2397670A
Cited
US2384266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |