US3133468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension indicating device
Assignee: Individual
•
Filing: 1961-03-21
•
Granted: 1964-05-19
•
Expires: 1981-03-21
Abstract
No abstract record available.
Inventors
- 👤 James D Cumming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:59
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/02; F; F16; F16B; F16B13/00; F16B13/04; F16B13/06; F16B13/063; F16B13/066; F16B31/00; F16B31/02; F16B31/028; G; G01; G01B; G01B11/00; G01B11/16; G01B5/00; G01B5/30
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |