Patent US2351485A successfully refreshed from Google Patents.
Patent US1284647A successfully refreshed from Google Patents.
Patent US1244790A successfully refreshed from Google Patents.
US1244790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gang-valve lock for gas-ranges, &c.
Assignee: Individual
•
Filing: 1916-10-21
•
Granted: 1917-10-30
•
Expires: 1936-10-21
Abstract
No abstract record available.
Inventors
- 👤 David N Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:59
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/12; Y; Y10; Y10S; Y10S70/00; Y10S70/56; Y10S70/58; Y10T; Y10T137/00; Y10T137/7069; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5615; Y10T70/5619; Y10T70/5624; Y10T70/5628; Y10T70/569; Y10T70/5717; Y10T70/5721; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5774
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) | 1920-10-29 | 1921-04-30 | 1921-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-10-29 | 1925-04-30 | 1925-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-10-29 | 1929-04-30 | 1929-10-30 | $7700.00 | Window Closed / Lapsed |