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US3473561A
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Assignee: IVAR L SVENSSON
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Filing: 1966-03-29
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Granted: 1969-10-21
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Expires: 1986-03-29
Abstract
No abstract record available.
Inventors
- 👤 Bert N Svenson
- 👤 Ivar L Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:26
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/148; F16K15/1481; F16K15/02; F16K15/06; F16K15/063; F16K2200/00; F16K2200/30; F16K2200/303; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7879; Y10T137/7888; Y10T137/789; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/7929; Y10T137/7931; Y10T137/7932; Y10T137/7933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2946342A
Cited
US2008818A
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US2627874A
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US2641282A
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US2912999A
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US2936779A
Cited
US3022796A
Cited
US2949930A
Cited
US3122156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |