US2602652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bubble cap
Assignee: CF Braun and Co
•
Filing: 1948-07-06
•
Granted: 1952-07-08
•
Expires: 1968-07-06
Abstract
No abstract record available.
Inventors
- 👤 Charles L Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:44
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/20; B01D3/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1796256A
Cited
US1873137A
Cited
US2338928A
Cited
US2443812A
Cited
US2480862A
Cited
US2438536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |