US3473833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic pipe coupling
Assignee: Millennium Petrochemicals Inc
•
Filing: 1967-12-28
•
Granted: 1969-10-21
•
Expires: 1987-12-28
Abstract
No abstract record available.
Inventors
- 👤 Sherman L Bremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C65/00; B29C65/48; B29C65/56; B29C65/561; B29C65/64; B29C65/72; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/124; B29C66/1244; B29C66/12449; B29C66/1246; B29C66/12463; B29C66/12464; B29C66/12469; B29C66/32; B29C66/322; B29C66/5223; B29C66/52231; B29C66/5229; B29C66/52291; B29C66/52298; B29C66/70; B29C66/74; B29C66/742; F; F16; F16L; F16L47/00; F16L47/02; B29C2793/00; B29C2793/0081
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2735699A
Cited
US643358A
Cited
US1021264A
Cited
US2498831A
Cited
US2720332A
Cited
GB852787A
Cited
FR1227043A
Cited
FR1279424A
Cited
US3365216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |