Patent US2418436A successfully refreshed from Google Patents.
US2418436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Identifying minute measurement
Assignee: Individual
•
Filing: 1943-07-05
•
Granted: 1947-04-01
•
Expires: 1963-07-05
Abstract
No abstract record available.
Inventors
- 👤 Russell P Talbot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:49
CPC Classifications
G; G04; G04B; G04B19/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1775794A
Cited
US956916A
Cited
US1088107A
Cited
US1800044A
Cited
US2119627A
Cited
US2122225A
Cited
US2238718A
Cited
US2329543A
Cited
US2246001A
Cited
US2246002A
Cited
US2256170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |