US2942572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic pressure indicator
Assignee: Pall Corp
•
Filing: 1958-06-17
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Granted: 1960-06-28
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Expires: 1978-06-17
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/08; G01L19/12; B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; H; H01; H01H; H01H35/00; H01H35/24; H01H35/38; H01H36/00; H01H36/0073; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2649114A
Cited
US2669707A
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US2655894A
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US2700362A
Cited
US2803718A
Cited
US2767276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |