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Patent US2150489A successfully refreshed from Google Patents.
US2150489A
Expired / Lapsed
US
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Totalizing and recording apparatus
Assignee: Bendix Aviation Corp
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Filing: 1936-10-02
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Granted: 1939-03-14
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Expires: 1956-10-02
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Chappell
- 👤 Rutger B Colt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:21
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02; G01P5/06
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) | 1942-03-13 | 1942-09-12 | 1943-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-13 | 1946-09-12 | 1947-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-13 | 1950-09-12 | 1951-03-14 | $7700.00 | Window Closed / Lapsed |