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US2721022A
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Assignee: Individual
•
Filing: 1951-11-01
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Granted: 1955-10-18
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Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 William J Billerbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:24
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/46; B65D5/46072; B65D5/4612; B65D5/46128; B65D5/48; B65D5/48024; B65D5/48026; B65D85/00; B65D85/50; B65D85/52; Y; Y10; Y10S; Y10S229/00; Y10S229/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19525E
Cited
US1469536A
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US1522311A
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US1833441A
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US2180691A
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US2351207A
Cited
US2358295A
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US2444326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |