Patent US2817835A successfully refreshed from Google Patents.
US2817835A
Expired / Lapsed
US
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Lobe comparison systems
Assignee: Individual
•
Filing: 1945-11-29
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Granted: 1957-12-24
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Expires: 1965-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Harvey R Worthington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1787992A
Cited
US1968068A
Cited
US2061737A
Cited
US2320521A
Cited
US2283897A
Cited
US2283677A
Cited
US2480829A
Cited
US2445895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |