US2852930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key holder
Assignee: Individual
•
Filing: 1955-10-20
•
Granted: 1958-09-23
•
Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 John F Thull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:48
CPC Classifications
A; A44; A44B; A44B15/00; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US168258A
Cited
US221571A
Cited
US462465A
Cited
US751643A
Cited
US681894A
Cited
US863297A
Cited
US1187471A
Cited
GB151373A
Cited
US1593254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |