US3289397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol filter
Assignee: General Dynamics Corp
•
Filing: 1964-03-31
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Granted: 1966-12-06
•
Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Roger L Schonewald
- 👤 Oliver L I Brown
- 👤 Jr Mason P Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:15
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0052; B01D46/0056; B01D46/0027; B01D46/003; B01D46/0031; B01D46/24; B01D46/42; B01D46/44; B01D46/442; B01D50/00; B01D50/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123286A
Cited
US1075736A
Cited
US1292561A
Cited
US1773840A
Cited
US1690813A
Cited
GB532467A
Cited
US2792909A
Cited
US3022776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |