US3758372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foraminous structures
Assignee: FMC Corp
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Filing: 1971-07-22
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Granted: 1973-09-11
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Expires: 1991-07-22
Abstract
Abstract A foraminous structure having a plurality of walls, each extending between pairs of spaced surfaces which are disposed in staggered relationship along a common plane. The walls are pivotally connected to edges of the spaced surfaces between which they extend and may be disposed, relative thereto, at an angle approaching 180 degrees.
Inventors
- 👤 T Fairbanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:16
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C69/00; B32B27/10; B32B3/00; B32B3/10; B32B3/12; B29C48/00; B29C48/001; B29C48/0011; B29C48/03; B29C48/07; B29C48/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24628; Y10T428/24661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |