US3274138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum mulch film
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-04-15
•
Granted: 1966-09-20
•
Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Robert H Salvesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:28
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/16; C; C09; C09K; C09K17/00; C09K17/52; Y; Y02; Y02P; Y02P20/00; Y02P20/141
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA658987A
Cited
US2765288A
Cited
US3007825A
Cited
US3097179A
Cited
US3061974A
Cited
US3099897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |