US2997187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Figures
Assignee: —
•
Filing: —
•
Granted: 1961-08-22
•
Expires: 1978-08-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:27
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/16; B65G57/18; B65G57/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2028697A
Cited
US2598222A
Cited
US2745535A
Cited
US2703182A
Cited
US2648181A
Cited
US2585697A
Cited
US2744369A
Cited
US2716497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |