US1236617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning shower-head.
Assignee: Speakman Supply & Pipe Co
•
Filing: 1915-09-17
•
Granted: 1917-08-14
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Expires: 1935-09-17
Abstract
No abstract record available.
Inventors
- 👤 Willard A Speakman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:37
CPC Classifications
B; B05; B05B; B05B15/00; B05B15/50; B05B15/52; B05B15/522; B05B15/5223; B05B15/5225; B05B1/00; B05B1/14; B05B1/18; B05B1/188; B05B1/1882; B05B1/1896; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336
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) | 1920-08-13 | 1921-02-12 | 1921-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-08-13 | 1925-02-12 | 1925-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-08-13 | 1929-02-12 | 1929-08-14 | $7700.00 | Window Closed / Lapsed |