US2851079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free spinning nut and washer assembly with resilient sealant
Assignee: Watts Electric and Manufacturing Co
•
Filing: 1954-10-25
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Granted: 1958-09-09
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Robert M Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:36
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/02; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947; Y10S411/955; Y10S411/956; Y10S411/96
Claims Analysis
Total Claims: 0
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DE823368C
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US2761349A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |