US2932038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Couch
Assignee: Individual
•
Filing: 1957-08-22
•
Granted: 1960-04-12
•
Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:36
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/02; A61H1/0218; A61H2203/00; A61H2203/04; A61H2203/0481; A61H2203/0493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1401027A
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US2574091A
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US2475289A
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US2515261A
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US2562339A
Cited
US2630800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |