Patent US2876983A successfully refreshed from Google Patents.
US2876983A
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US
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Safety shutoff coupling
Assignee: Individual
•
Filing: 1954-09-27
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Granted: 1959-03-10
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Expires: 1974-09-27
Abstract
No abstract record available.
Inventors
- 👤 Martensson Marten
- 👤 Theodore J Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:11
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/027; F23; F23N; F23N2239/00; F23N2239/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1445827A
Cited
US1593772A
Cited
GB387253A
Cited
US2147084A
Cited
US2276424A
Cited
GB599165A
Cited
US2670099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |