US2873630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power feed mechanisms
Assignee: Hartford Special Machinery Co
•
Filing: 1953-05-19
•
Granted: 1959-02-17
•
Expires: 1973-05-19
Abstract
No abstract record available.
Inventors
- 👤 William A Eschenburg
- 👤 David D Pettigrew
- 👤 Johnson Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:52
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; F15B11/072; F15B11/076; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/261; F15B2211/00; F15B2211/20; F15B2211/21; F15B2211/216; F15B2211/30; F15B2211/32; F15B2211/327; F15B2211/40; F15B2211/405; F15B2211/40576; F15B2211/40584; F15B2211/415; F15B2211/41527; F15B2211/41536; F15B2211/455; F15B2211/46; F15B2211/60; F15B2211/63; F15B2211/6303; F15B2211/6306; F15B2211/6313; F15B2211/6336; F15B2211/70; F15B2211/77; F15B2211/7725; F15B2211/80; F15B2211/885; F15B2211/8855; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US706688A
Cited
US1986848A
Cited
US2605748A
Cited
US2733691A
Cited
US2655058A
Cited
US2684017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |