US2777452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus for beer dispensing systems
Assignee: Individual
•
Filing: 1952-10-30
•
Granted: 1957-01-15
•
Expires: 1972-10-30
Abstract
No abstract record available.
Inventors
- 👤 Michael J Zwosta
- 👤 Joseph M Zwosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:48
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; B08B9/0323; B67; B67D; B67D1/00; B67D1/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557874A
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US1194542A
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US1589721A
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US654647A
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US680836A
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US695323A
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US1151968A
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US2092257A
Cited
US2174311A
Cited
US2386713A
Cited
US2450308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |