US2690948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balance case
Assignee: Torsion Balance Co
•
Filing: 1951-03-28
•
Granted: 1954-10-05
•
Expires: 1971-03-28
Abstract
No abstract record available.
Inventors
- 👤 William C Seyter
- 👤 Mender William
- 👤 Windisch Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:58
CPC Classifications
G; G01; G01G; G01G21/00; G01G21/28; G01G21/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US615788A
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US1940461A
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US1901947A
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US2141124A
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US2432455A
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US2473239A
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US2571071A
Cited
US2523921A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |