US2023270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sponge rubber sheet material having broken cells, said cells being filled with fertilizer, insecticides, or plastic fillers
Assignee: Individual
•
Filing: 1935-02-28
•
Granted: 1935-12-03
•
Expires: 1955-02-28
Abstract
No abstract record available.
Inventors
- 👤 Albert C Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
A; A01; A01M; A01M1/00; A01M1/14; A01M1/18; A01G; A01G29/00; A01G9/00; A01G9/02; A01G9/021; Y; Y10; Y10S; Y10S111/00; Y10S111/90; Y10S71/00; Y10S71/904
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) | 1938-12-02 | 1939-06-03 | 1939-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-02 | 1943-06-03 | 1943-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-02 | 1947-06-03 | 1947-12-03 | $7700.00 | Window Closed / Lapsed |