US2721749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing assembly
Assignee: Individual
•
Filing: 1952-08-29
•
Granted: 1955-10-25
•
Expires: 1972-08-29
Abstract
No abstract record available.
Inventors
- 👤 Howard M Crow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K41/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE501267A
Cited
US625155A
Cited
US683252A
Cited
US1915716A
Cited
DE688252C
Cited
US1989897A
Cited
US2519436A
Cited
US2630357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |