US2164320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination seat and flush rim
Assignee: John B. Pierce Laboratory
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Filing: 1938-04-08
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Granted: 1939-07-04
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Expires: 1958-04-08
Abstract
No abstract record available.
Inventors
- 👤 William C Groeniger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:16
CPC Classifications
A; A47; A47K; A47K13/00; A47K13/24; A47K13/30; A47K13/302; E; E03; E03D; E03D2201/00; E03D2201/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-07-03 | 1943-01-02 | 1943-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-03 | 1947-01-02 | 1947-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-03 | 1951-01-02 | 1951-07-04 | $7700.00 | Window Closed / Lapsed |