Patent US2916854A successfully refreshed from Google Patents.
US2916854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cultivating plants by use of perforated plastic foil
Assignee: Individual
•
Filing: 1957-08-27
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Granted: 1959-12-15
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Expires: 1977-08-27
Abstract
No abstract record available.
Inventors
- 👤 Heigl Otto
- 👤 Scharnagl Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
A; A01; A01G; A01G7/00; A01G9/00; A01G22/00; A01G22/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741833A
Cited
US1803838A
Cited
US2030267A
Cited
US2023270A
Cited
US2158952A
Cited
DE828843C
Cited
US2605589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |