US2939248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propagation caps
Assignee: Individual
•
Filing: 1958-11-19
•
Granted: 1960-06-07
•
Expires: 1978-11-19
Abstract
No abstract record available.
Inventors
- 👤 James T Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:37
CPC Classifications
A; A01; A01G; A01G2/00; A01G2/20; A01G9/00; A01G9/02; A01G9/0302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1655731A
Cited
FR340470A
Cited
FR414111A
Cited
US1774019A
Cited
US1868609A
Cited
US2021793A
Cited
US2572473A
Cited
US2786306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |