US3034416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic ventilator window
Assignee: Individual
•
Filing: 1959-12-11
•
Granted: 1962-05-15
•
Expires: 1979-12-11
Abstract
No abstract record available.
Inventors
- 👤 George A Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:51
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119288A
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US763106A
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US1007675A
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US1165990A
Cited
US1211191A
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US1363735A
Cited
US1862967A
Cited
US2125669A
Cited
GB540802A
Cited
US2384240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |