US3536138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irrigation well casing connector
Assignee: Individual
•
Filing: 1969-02-10
•
Granted: 1970-10-27
•
Expires: 1989-02-10
Abstract
No abstract record available.
Inventors
- 👤 Bernard Laska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:45
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/08; F; F16; F16L; F16L25/00; F16L25/0018
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |