US2886274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable stand
Assignee: Knox Manufacturing Co
•
Filing: 1953-12-28
•
Granted: 1959-05-12
•
Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Russell E Petrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:18
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/58; F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F16M2200/00; F16M2200/04; F16M2200/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US726455A
Cited
US1258518A
Cited
US1554538A
Cited
US2549584A
Cited
US2598753A
Cited
US2659559A
Cited
US2750141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |