Patent US416782A successfully refreshed from Google Patents.
Patent US3218696A successfully refreshed from Google Patents.
Patent US2941774A successfully refreshed from Google Patents.
Patent US2539686A successfully refreshed from Google Patents.
Patent US1800844A successfully refreshed from Google Patents.
US1800844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of attaching swivel nuts to sprinkler bodies
Assignee: Individual
•
Filing: 1928-01-28
•
Granted: 1931-04-14
•
Expires: 1948-01-28
Abstract
No abstract record available.
Inventors
- 👤 Lewen R Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:00
CPC Classifications
B; B21; B21D; B21D19/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49858; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-04-13 | 1934-10-13 | 1935-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-13 | 1938-10-13 | 1939-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-13 | 1942-10-13 | 1943-04-14 | $7700.00 | Window Closed / Lapsed |