US2908286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector valve for central suction plants
Assignee: Individual
•
Filing: 1956-06-01
•
Granted: 1959-10-13
•
Expires: 1976-06-01
Abstract
No abstract record available.
Inventors
- 👤 Hallstrom Olof Henrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:05
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/1018; A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/38; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7898; Y10T137/7903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735644A
Cited
US1037083A
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US1096278A
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US1255175A
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US1743293A
Cited
DE680031C
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US2311110A
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DE849340C
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US2708766A
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US2717757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |