Patent US2838757A successfully refreshed from Google Patents.
US2838757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staying machine
Assignee: KAMP Co Inc
•
Filing: 1954-07-26
•
Granted: 1958-06-17
•
Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Clifford F Holtkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:56
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/60; B31B50/68; B31B50/70; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/53787
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US441051A
Cited
US527574A
Cited
US569567A
Cited
US658029A
Cited
US793549A
Cited
US1192201A
Cited
US1733328A
Cited
US2009421A
Cited
US2070767A
Cited
US2546398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |