US2989107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking composition
Assignee: Arthur D Little Inc
•
Filing: 1959-01-08
•
Granted: 1961-06-20
•
Expires: 1979-01-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond W James
- 👤 Richard E Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:06
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/30; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/947
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA514296A
Cited
US2321414A
Cited
US2394101A
Cited
US2423171A
Cited
DE853927C
Cited
US2698250A
Cited
US2901099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |