US2769397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible chamber fluid handling device
Assignee: Individual
•
Filing: 1950-12-22
•
Granted: 1956-11-06
•
Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 William B Bolger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:08
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1060261A
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US1244205A
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US1284465A
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US1495724A
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US1873138A
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US1922196A
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US2412397A
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US2446620A
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GB582032A
Cited
US2492149A
Cited
US2612186A
Cited
US2575240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |