US1379165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sucker-rod attachment to prevent sanding-up of well-pumps
Assignee: Individual
•
Filing: 1920-07-12
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Granted: 1921-05-24
•
Expires: 1940-07-12
Abstract
No abstract record available.
Inventors
- 👤 Burns Robert Lee
- 👤 Winger Fred Freamond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:14
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/12; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44265; Y10T24/44573; Y10T24/44607; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17171; Y10T279/17179; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-05-23 | 1924-11-22 | 1925-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-23 | 1928-11-22 | 1929-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-23 | 1932-11-22 | 1933-05-24 | $7700.00 | Window Closed / Lapsed |