US2536237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock
Assignee: Individual
•
Filing: 1947-04-08
•
Granted: 1951-01-02
•
Expires: 1967-04-08
Abstract
No abstract record available.
Inventors
- 👤 William F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US391271A
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US508467A
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FR743618A
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CH6465A
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US666381A
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US723489A
Cited
CH40797A
Cited
US1216556A
Cited
CH84473A
Cited
US1517174A
Cited
US1989584A
Cited
US2091205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |