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US2605558A
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Assignee: Benson Lehner Corp
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Filing: 1950-11-14
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Granted: 1952-08-05
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Expires: 1970-11-14
Abstract
No abstract record available.
Inventors
- 👤 George F J Lehner
- 👤 Ralph E Brown
- 👤 Ernest C Burkhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:37
CPC Classifications
G; G09; G09B; G09B17/00; G09B17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |