US2520014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control mechanism
Assignee: REHNBERG JACOBSON Mfg CO Inc
•
Filing: 1946-04-24
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Granted: 1950-08-22
•
Expires: 1966-04-24
Abstract
No abstract record available.
Inventors
- 👤 Axel F Rehnberg
- 👤 Nelson John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:54
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/38; B23Q5/40; B23Q5/402; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5179; Y10T408/00; Y10T408/16; Y10T408/175; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2533; Y10T82/2535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US142966A
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US492567A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |