Patent US2821206A successfully refreshed from Google Patents.
US2821206A
Expired / Lapsed
US
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Combined electroresponsive valve and pressure regulators
Assignee: Baso Inc
•
Filing: 1951-04-05
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Granted: 1958-01-28
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Expires: 1971-04-05
Abstract
No abstract record available.
Inventors
- 👤 Gifford I Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:23
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; G05D16/20; G05D16/2086; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/8593; Y10T137/87917; Y10T137/88046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US749974A
Cited
US765638A
Cited
US959618A
Cited
US1160285A
Cited
FR501132A
Cited
US1587969A
Cited
US1660842A
Cited
US2054481A
Cited
FR709856A
Cited
US2050430A
Cited
DE627183C
Cited
GB471074A
Cited
US2265210A
Cited
US2335824A
Cited
US2255404A
Cited
US2333913A
Cited
US2616451A
Cited
US2604901A
Cited
US2575850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |