US2544734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic filler
Assignee: Phillips Petroleum Co
•
Filing: 1947-07-14
•
Granted: 1951-03-13
•
Expires: 1967-07-14
Abstract
No abstract record available.
Inventors
- 👤 Clair Theodore A St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:25
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/0317; F17C2205/0323; F17C2205/0329; F17C2205/0335; F17C2205/0338; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2227/00; F17C2227/01; F17C2227/0107; F17C2227/0121; F17C2227/0128; F17C2227/0135; F17C2227/03; F17C2227/0302; F17C2227/0309; F17C2227/0316; F17C2227/0367; F17C2227/0369; F17C2227/0374; F17C2227/04; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2250/0413; F17C2250/0421; F17C2250/06; F17C2250/0605; F17C2250/0636; F17C2260/00; F17C2260/02; F17C2260/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US412327A
Cited
US1317956A
Cited
US1652710A
Cited
US2039099A
Cited
US1897135A
Cited
US2264562A
Cited
US2408842A
Cited
US2406263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |