Patent US2999146A successfully refreshed from Google Patents.
US2999146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-pervious sheet material
Assignee: Poly Industries Inc
•
Filing: 1957-12-04
•
Granted: 1961-09-05
•
Expires: 1977-12-04
Abstract
No abstract record available.
Inventors
- 👤 Leo I Kaplan
- 👤 Horres Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:21
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/26; B21; B21D; B21D47/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US928701A
Cited
US1132676A
Cited
US1094910A
Cited
US1622664A
Cited
US1819272A
Cited
US2340860A
Cited
US2445801A
Cited
US2752672A
Cited
US2746139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |