US2887974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple portable support means
Assignee: Individual
•
Filing: 1956-03-09
•
Granted: 1959-05-26
•
Expires: 1976-03-09
Abstract
No abstract record available.
Inventors
- 👤 David H Weinfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:16
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/02; H01R43/0263; H01R11/00; H01R11/11; H01R11/22; H01R11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US546421A
Cited
US574529A
Cited
US1323127A
Cited
FR965792A
Cited
US1530802A
Cited
FR804357A
Cited
FR47247E
Cited
US2324803A
Cited
DE854100C
Cited
US2510198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |