US3066527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter gauge
Assignee: Bacharach Instrument Co
•
Filing: 1959-11-20
•
Granted: 1962-12-04
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Expires: 1979-11-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:16
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0084; B01D46/0086; B01D46/54; B01D46/543; F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; F02M35/09; B01D2279/00; B01D2279/60; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |