US2834180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time indicating device
Assignee: Individual
•
Filing: 1954-06-22
•
Granted: 1958-05-13
•
Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Tracy B Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:17
CPC Classifications
G; G04; G04B; G04B21/00; G04B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US909298A
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US1220851A
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US1300309A
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US1383500A
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GB172605A
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US1468267A
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GB411139A
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US1960521A
Cited
FR788346A
Cited
US2224085A
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US2241447A
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US2244332A
Cited
US2384581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |