US3276596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety filter device
Assignee: All American Metal Spinning Co
•
Filing: 1963-08-22
•
Granted: 1966-10-04
•
Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Ray J Gran
- 👤 Harold H Horwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A FILTER ASSEMBLY COMPRISING A RING, A PAIR OF GENERALLY DIAMETRICALLY OPPOSED SUSPENDER ELEMENTS CARRIED BY SAID RING AND EXTENDING DOWNWARDLY THEREFROM, A FILTER MEMBER FORMED OF FILTER MATERIAL, SAID FILTER MEMBER HAVING A CURVED, UNSEAMED BOTTOM SURFACE, AND A PAIR OF OPPOSITE END EDGES, SAID END EDGES EACH BEING SECURED TO ONE OF SAID SUSPENDER MEMBERS, AND AT LEAST ONE PRESSURE-DISSIPATING MEMBER, SAID PRESSURE-DISSIPAT-
Claim 2
Dependent Claim
65 words
A FILTER ASSEMBLY COMPRISING A RING, A PAIR OF GENERALLY DIAMETRICALLY OPPOSED SUSPENDER ELEMENTS CARRIED BY SAID RING AND EXTENDING DOWNWARDLY THEREFROM, A FILTER MEMBER FORMED OF FILTER MATERIAL, SAID FILTER MEMBER HAVING A CURVED, UNSEAMED BOTTOM SURFACE, AND A PAIR OF OPPOSITE END EDGES, SAID END EDGES EACH BEING SECURED TO ONE OF SAID SUSPENDER MEMBERS, AND AT LEAST ONE PRESSURE-DISSIPATING MEMBER, SAID PRESSURE-DISSIPAT-
References Cited (Backward Citations)
US217906A
Cited
US432870A
Cited
GB191320761A
Cited
US1095494A
Cited
US1177277A
Cited
GB356458A
Cited
DE680796C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |