US3459443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamperproof coupling
Assignee: Watts Regulator Co
•
Filing: 1967-02-01
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Granted: 1969-08-05
•
Expires: 1987-02-01
Abstract
No abstract record available.
Inventors
- 👤 Lamont Chester Butters
- 👤 George Burchard Horne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:13
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/06; Y; Y10; Y10S; Y10S411/00; Y10S411/91; Y10S411/911; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331
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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |