US2923994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
johnson
Assignee: —
•
Filing: —
•
Granted: 1960-02-09
•
Expires: 1977-02-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:07
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/02; F16B5/0216; F16B2/00; F16B2/02; F16B21/00; F16B21/06; F16B21/08; F16B5/06; F16B5/0607; F16B5/12; H; H01; H01P; H01P1/00; H01P1/04; H01P1/042; Y; Y10; Y10T; Y10T24/00; Y10T24/30; Y10T24/44; Y10T24/44017; Y10T24/44026; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45524; Y10T24/45545; Y10T24/4555
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US440655A
Cited
USRE19304E
Cited
US1519210A
Cited
US1739090A
Cited
US1836890A
Cited
US2043555A
Cited
US2691201A
Cited
US2613243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |