Patent US2487863A successfully refreshed from Google Patents.
US3516694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling sleeve
Assignee: LARRY M SCHWARTZ
•
Filing: 1968-03-26
•
Granted: 1970-06-23
•
Expires: 1988-03-26
Abstract
No abstract record available.
Inventors
- 👤 Larry M Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:06
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16L27/107; F16L27/11; F16L27/111; F16L21/00; F16L21/002; F16L21/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |