US2586037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniform strand tension device
Assignee: Individual
•
Filing: 1951-01-23
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Granted: 1952-02-19
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Expires: 1971-01-23
Abstract
No abstract record available.
Inventors
- 👤 Robert D Heffelfinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:22
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/10; B65H59/16; B65H2553/00; B65H2553/20; B65H2553/21; B65H2553/24; B65H2553/26; B65H2555/00; B65H2555/20; B65H2555/22; B65H2555/23; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |