Patent US3950684A successfully refreshed from Google Patents.
Patent US1983106A successfully refreshed from Google Patents.
US1983106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packless valve
Assignee: Individual
•
Filing: 1933-04-01
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Granted: 1934-12-04
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Expires: 1953-04-01
Abstract
No abstract record available.
Inventors
- 👤 Clarence M Sundstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:08
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/035; F16K; F16K41/00; F16K41/10; F16K41/12
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) | 1937-12-03 | 1938-06-04 | 1938-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-03 | 1942-06-04 | 1942-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-03 | 1946-06-04 | 1946-12-04 | $7700.00 | Window Closed / Lapsed |