Patent US4544473A successfully refreshed from Google Patents.
Patent US2707916A successfully refreshed from Google Patents.
US2707916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rheological control apparatus
Assignee: Interchemical Corp
•
Filing: 1951-05-21
•
Granted: 1955-05-10
•
Expires: 1971-05-21
Abstract
No abstract record available.
Inventors
- 👤 Smith Daniel
- 👤 Hurley Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:57
CPC Classifications
B; B41; B41F; B41F31/00; B41F31/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1678091A
Cited
US1837702A
Cited
US2101322A
Cited
US2121045A
Cited
US2262573A
Cited
US2347619A
Cited
US2590538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |