US2851111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic packer
Assignee: Individual
•
Filing: 1955-09-26
•
Granted: 1958-09-09
•
Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jones A Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:53
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/124; E21B33/1243; E21B33/127; E21B33/1277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR756396A
Cited
US2061993A
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US2026883A
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US2098484A
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US2301190A
Cited
US2196658A
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US2227729A
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US2227730A
Cited
US2611437A
Cited
US2738014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |