US2646944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strand tensioning device
Assignee: Akzo Nobel UK PLC
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Filing: 1952-06-20
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Granted: 1953-07-28
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Expires: 1972-06-20
Abstract
No abstract record available.
Inventors
- 👤 Robert D Heffelfinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:50
CPC Classifications
D; D02; D02H; D02H13/00; B; B65; B65H; B65H59/00; B65H59/10; B65H59/20; B65H59/22; B65H59/225; B65H2301/00; B65H2301/50; B65H2301/53; B65H2301/531; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |