US3508565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid device
Assignee: Dresser Industries Inc
•
Filing: 1967-08-08
•
Granted: 1970-04-28
•
Expires: 1987-08-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Strantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:26
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/08; F15C1/10; F15C1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2147; Y10T137/2158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124999A
Cited
US3075548A
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US3159168A
Cited
US3117593A
Cited
US3273377A
Cited
US3266510A
Cited
US3228410A
Cited
US3348562A
Cited
US3285264A
Cited
US3338515A
Cited
US3390611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |