US1244222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head-locking mechanism.
Assignee: UNITED FILTERS Corp
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Filing: 1915-01-19
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Granted: 1917-10-23
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Expires: 1935-01-19
Abstract
No abstract record available.
Inventors
- 👤 Jasper A Mccaskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:23
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/12; B; B01; B01J; B01J3/00; B01J3/03; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0805
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) | 1920-10-22 | 1921-04-23 | 1921-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-10-22 | 1925-04-23 | 1925-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-10-22 | 1929-04-23 | 1929-10-23 | $7700.00 | Window Closed / Lapsed |