Patent US2932936A successfully refreshed from Google Patents.
US2932936A
Expired / Lapsed
US
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Balloon control for double twist spindles
Assignee: Individual
•
Filing: 1954-09-08
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Granted: 1960-04-19
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Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Landolt Karl Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:49
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/42; D01H1/427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US535029A
Cited
US539561A
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FR346003A
Cited
NL34002C
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US2127921A
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FR872986A
Cited
US2660856A
Cited
US2603938A
Cited
BE513086A
Cited
US2731786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |