Patent US4135868A successfully refreshed from Google Patents.
Patent US3069538A successfully refreshed from Google Patents.
US3069538A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1959-07-17
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Granted: 1962-12-18
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Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Harry E Hobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:26
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/08; F21V21/084; F21V21/14; F21V21/145; F21V21/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1449509A
Cited
US1584276A
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US1904902A
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US2042385A
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US2165531A
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US2485429A
Cited
US2423664A
Cited
US2524881A
Cited
GB691416A
Cited
GB710983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |