US3474816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purgeable gas pressure regulators
Assignee: Aqua Lung America Inc
•
Filing: 1967-07-25
•
Granted: 1969-10-28
•
Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Lester D Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:07
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; G05D16/0644; G05D16/0663; G05D16/10; G05D16/101; G05D16/107; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2617; Y10T137/4238; Y10T137/4245; Y10T137/4259; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87217; Y10T137/87225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563385A
Cited
US1244226A
Cited
US2745429A
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US2858840A
Cited
US3071962A
Cited
US3107693A
Cited
US3334648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |