Patent FR567047A successfully refreshed from Google Patents.
Patent US2737736A successfully refreshed from Google Patents.
US2737736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
macdonald
Assignee: —
•
Filing: —
•
Granted: 1956-03-13
•
Expires: 1973-03-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:17
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; B; B62; B62D; B62D49/00; B62D49/06; B62D49/0621
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US389897A
Cited
US536294A
Cited
USRE19987E
Cited
US2195607A
Cited
US1039686A
Cited
US2020271A
Cited
US1690391A
Cited
US2034141A
Cited
US2326561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |